I know, not much info in topic----
I have an existing pair of ceiling spks wanting to use for surrounds. We are installing a new Sony XR65A95K TV. BUT we have no front speakers..........The Sony does have the ability to be a "center" speaker. Not sure if that does anything for what I'm trying to do here, just thought I'd mention it.
Is there a way to use the Sony's speaker system and some how tie it into the pair of ceiling speakers? Sonos comes to mind but can't use a bar for fronts.......Not sure if I could use the Arc HDMI on Sony tied to a Sonos AMP, powering the ceiling spks, not turn the Sony's speakers off, like normal when using an AMP. I think this would work but it would just be a left/ right parallel feed like the TV would be giving.....
Now that I'm writing this is sounds kind of like a crazy idea, but who knows one of you may have some answer.........

1) As far as I know, what you are wanting can't be done. At least not without doing a serious science project - I have some ideas but see comment #2 below.
2) It doesn't make any sense to do what you are wanting in the 1st place.

I mean if you are using the crappy speakers built into the TV, with the tiny bit of power they have - WHY would you want to even try and throw surround sound speakers into this? Just doesn't make any sense. If the answer is "because the customer can". Well, they are stupid and I wouldn't touch it with a 10' pole.

They already have inceiling speakers anyway. Why are they opposed to putting a sound bar, or in-wall speakers, or even some more in-ceiling speakers to do it at least 1/2 arse correct?
I'm just really smacking my head trying to understand why someone would want to do it this way.

I would not want this project.

Where are the ceiling speakers? If they are actually near the front, they could be used as L/R along with the Sony center speaker and a conventional A/V receiver.

This seems like a project where the significant other is in charge of the esthetics and esthetics rule.

Perhaps you could use “invisible” in-wall speakers for L/R and surround and be a hero for the esthetics ruler.

I totaled this in my head for what it would take - receiver w/preamp out, HDMI audio inserter.

With labor, I think this would come out to be about a $1,400 project. The TV would have to be fixed at a high volume (preamp doing the volume control), which means you would probably hear an audible hiss from the TV when it was really quiet in the room. Getting the rear speakers level matched would be a bear. And the whole system would sound like you would expect = TV speakers with some surround sound.
Still asking myself why!

I think the value of this approach is in figuring it all out (without having to actually lift any tools) and finding that the cost in time and money makes this idea not worth doing.
That, in itself, can motivate a person to figure out such costs in the future when someone makes a similar suggestion.

Yeah, that's what I figured is was going to be- a science project...........was hoping for some "miracle idea" someone might have had.
Thanks for the honest responses

Note: Without actually doing it, there is no way to know if this would even workout in a day-to-day usable way. But in theory, it should work. Just doesn't make sense.

Any insight as to why the customer just will not allow additional speakers anywhere (soundbar, in-wall, in-ceiling, bookshelf, etc.). When they already have a set of in-ceiling speakers installed in the room?
Was it they had them put in when the house was built but now regret it, because they don't like how they look? But want to use them somehow because they are there?

With custom options available such as invisible speakers and custom built soundbars to match the TV and/or decor, I'm guessing the customer doesn't want anything showing but is to cheap to pay for a custom solution.
But probably has a $13k SubZero fridge in the kitchen. With a $12k Thermador stove that they never use. LMFAO!

For simple TV rooms, having a couple overhead stereo speakers run by a Sonos amp off the ARC port will still be 100 times better than the TV speakers… I have done it many times.

A few years ago I did a retro that used one of those Sony center channels. The customer had just bought the place, so we were getting things back up and running for him. There was an existing 65" built into recess in a very plain white wall in the living room. There was a set of Stealth speakers to the left and right of the recess, but were house audio only. There was a rack in a closet elsewhere with the gear.

The guy did his own research and upgraded the TV to a Sony OLED with the active surface (center channel) feature of the TV. Since he had that, he now wanted surround. So we added a Stealth sub up front, repurposed the L+R for the surround (added a Port to the receiver in the rack so it could still be grouped), and retro'd a set of rears in - which he all but insisted couldn't be done.

Between the Stealth and the active surface center channel, I made sure to throw out the 'this might suck' disclaimer in a gentle way, but it ended up being pretty alright. It still looks like a super plain white wall, so you do get that 'where's it all coming from' effect.

Fun job. Happy customer.

Does the TV allow you to connect an AVR speaker output to it for center channel?  I've never used this feature so not sure how that works.

That particular TV does have a "Center Channel Speaker" input on the back, in the form of spring clips. It's a single channel connection, that drives both the left & right transducers in the TV.
That doesn't help PSS, since the customer seems to want no other speakers added. So missing the L&R audio. Hence the need for preamp outputs from an AV receiver, going into an HDMI audio inserter, which would then go back into the TV for the front L&R audio to come from the TV (using TV power). Then the rear surround in-ceiling speakers powered from the AV receiver.

In Mike's case above, it was being used as intended with external power driving the TV transducers as a center channel. And being it was stealth speakers for the front L&R (using the same type of tech as the TV, and similar sound characteristics), it worked out 'pretty alright'. I'm sure the tonal mismatch was still very apparent, even with EQ correction (to attentive ears).

That was one of the things I loved about B&O TV's, great sounding speakers and built-in surround sound, just add a couple of rear speakers and the TV will handle the processing.

Well, I mean, the standing waves in the room did a really good job of covering up said tonal mismatch.  So it was pretty much perfect.

Where's that facepalm emoji...

If the speaker wire returns to behind the TV, you could use the Russound TVA2.1 amplifier to drive the ceiling speakers. This amp learns tv volume up, down and mute commands. You could leave the tv speakers on.

Would that be a Dolby Atmos solution? Of course not. Would it make TV sound better? probably.