9 players - Blinds $5/5

Effective stack on the flop varies but main villain’s stack size is $1050 and hero has $1500.

Main villain is in UTG+2

Setup
SB - Hero [A♠︎K♦︎]

Preflop (Pot size: 0)
Hero posts small blind $5
BB posts big blind $5
UTG straddle $10
UTG+1 folds
UTG+2 calls $10
MP calls $10
HJ calls $10
CO calls $10
BTN folds
Hero bets $80
BB folds
UTG folds
UTG+2 calls $70
MP calls $70
HJ folds
CO calls $70

Flop (Pot size: 350) [K♥︎K♣︎6♥︎]
Hero bets $150
UTG+2 calls $150
MP folds
CO folds

Turn (Pot size: 650) [8♥︎]
Hero?

So Villain at this point has $820 behind. He is generally passive and opens/calls wide. But him calling my $80 bet does make his range slightly tighter. But I wouldn’t put it past him to call with KQ,KJ ( but more likely suited), and some suited Aces. He could have 66. He is capable of bluffing/stabbing at the pot in position. If I check and he bets, I would have to call and on river I would get very good odds to cal it off. Can I lead ? If so for how much ?

I might even go a little larger pre, would go bigger on the flop.

I would check-call the turn, and bet pot on the river if he checks back turn and river isn't a heart.

Bloated pots give me anxiety, because it's hard to know if villains are thinking of betsizes in relative or absolute amounts. This feels like a bet/call it off. We're drawing pretty live against hearts and could also have him outkicked. This feels like a bet and a sigh call vs a shove. Save your vomit for when he flats and a 4th heart comes.

What’s the bet size on the turn ?

I agree preflop I should have sized it bigger (always happens when I don’t concentrate and I feel I have to make a quick decision). I thought flop size was okay. But yeah 6 way I could charge for the flush draws a lot more.

Turn I’m making it between 150-220.
(1/4-1/3).
In a straddle pot that went that big I like 1/4 the most. It would be 160-165.

I would go for 165, if he mini-raise I call. If he raises bigger I fold. He have the 66 and the flushes. Don’t think he have JJ+ because this hands should be ORaised PF, and not sure if they are raising this hands on a 3 hearts board. Dont think so.

77-99 are not raising and will call.

AhXx can bluff, but honestly... he don’t have that much of it and I don’t mind folding vs a semibluff to the nut flush on this board and as the action have been gone.

If he is passive (as you said) Kx aren’t raising too.

Fold to a river bet?

I'm fine with the pre-size raise, but OOP going a bit higher is fine.

On turn, I bet and call it off. He could easily have a K, and if he has hearts, we have outs. If he has 66, so be it -- we still have out

Actually went for a small bet with the idea of folding to a shove. My read was that he wouldn't shove with just a K. I bet 220 and he called.

River was a brick. I checked and he bet 400 leaving 200 behind. With $1000 already in the pot I sigh called and he shows the 66.

I did go for the $220. So in a non-straddle pot you prefer 220? Why so ?

V having a King should be highly discounted since there is only one left in the deck and the way V played his hand pre-flop.

Yes, there is one left, but people love to limp with KQ, KJ, KT, even K9, and they are rarely folding KQ or KJ (probably not KT if suited) to a raise.

^that is true for this villain.