BB coldcaller is a fish, no postflop reads except that he seems generally passive

CO is a nitty TAG reg, he likely perceives me as being a pretty ABC reg

on the turn I'm obviously ahead of the fish but I am fucked against AA/6x. Is CO folding KQ if I barrel the turn? should I sicko b/f this turn?

PokerStars Game #59121880030: Hold'em No Limit (€0.50/€1.00 EUR) - 2011/03/13 6:16:37 CT [2011/03/13 7:16:37 ET]
Table 'Bilkis IX' 6-max Seat #4 is the button
Seat 1: Ritik (€100 in chips)
Seat 2: nyplny (€148 in chips)
Seat 3: RnoTheKing (€116.35 in chips)
Seat 4: Rak00 (€188.80 in chips)
Seat 5: VI-Popsmak (€103 in chips)
Seat 6: Apferl (€116.60 in chips)
VI-Popsmak: posts small blind €0.50
Apferl: posts big blind €1
*** HOLE CARDS ***
Dealt to VI-Popsmak [Ks As]
Ritik: folds
nyplny: folds
RnoTheKing: raises €2 to €3
Rak00: folds
VI-Popsmak: raises €7 to €10
Apferl: calls €9
RnoTheKing: calls €7
*** FLOP *** [6d Kd 6h]
VI-Popsmak: bets €14
Apferl: calls €14
RnoTheKing: calls €14
*** TURN *** [6d Kd 6h] [7h]
VI-Popsmak: