I still wouldn't defend this hand since his tendencies don't show he is over 3betting. 3betting TT is normal, and calling raises from sb with AJ/AQ/AJ just tells you he is not playing optimally calling too wide and probably 3betting even less. Unless you know specific positions with hands like he 3bets AQo vs UTG, your call is still probably 0 to -ev. As play you should be betting turn and river with some combos of AQ otherwise you don't have any bluffs here and too much value, but not every combo or else its too much - so something like and Ah/Qx combo or AQcc/ss seems balanced. As for sizing, play it exactly the same as if you had JJ/TT here.

Preflop defence seems fine to me, the squeeze size is small enough.

Flop may just be a fold right away, villain cbets into two players and we still have one player left to act. Seems fairly close tho and nut equity gets better multiway.

As played you could bet the turn. On the river bluff shove seems quite alright to me. Villains line is not all that strong and we have the best bluff blocker.

preflop is mix between 4bet and call, mainly 4bet I think. 1/2 pot OTF is close to fold. Should probably be betting OTT, have no showdown really and some equity. River bet needs to be more polar (larger) you're betting a lot of value OTT like Jx so we dont have any hands that are betting 1/2 pot OTR really.

I don't like the call pre, and opt to 4bet this combo mostly. As played the flop call is fine, you have to be betting this turn and prepared to be betting river too.

I would not call pre, is range is strong as you said and CO could call/call
OTF, in my opinion SB can bet all is TP+ and i put is bluffs on AQ, KQ and AK, so is range is pretty strong vs our AQ. I would consider a Fold here given that CO is in position and can call a lot here including hands that beat us.