Open A8o from SB, then mostly check the draw-heavy QJT flop and turn; occasional small bets are fine, but A-high with no diamond is not a strong bluff candidate.
Qd Jd Tc is very connected and favors the preflop raiser, but we still have a range advantage. With A-high and a gutshot plus backdoor clubs, solver prefers a lot of checking and some small bets. The 1.7BB c-bet is a reasonable mix, but checking more often is slightly higher EV.
Turn 6c adds more straight and flush possibilities; BB’s flop call is fairly strong. Our A-high with no diamond and only a gutshot is not a strong bluff candidate. Solver leans heavily toward checking here, with some small bets mixed in. Checking and realizing our equity is the main plan; if we do bet, a small 1/3-pot sizing is preferred.