20/40 Kill Pot,

[npknhldr]

Kill post is on button, TA player, playing super-nit tight today. I'm CO, 6h6s. Folded to me, open for 80.
Button (poster) pops it to 120. SB/BB fold. I call (pot=270).
Flop: Q(h)4(h)8(c). I check, button bets 40. I call.
Turn: 6(d). I C/R. Button says nice hand, calls down turn and river. Shows KK. Final pot size = 830.
Is the flop call with 66 automatic, or not? Auto-fold? Read on player is min. AQ or TT to reraise PF, if even that. On flop, I beat one possible holding (AK).