A6s clearly in a 28/23 UTG's range, much higher likelihood of AQ/AK than KQs although it's discounted. But still, some aware aggressive player isn't bet/calling KQ on the flop OOP.

Range has to be A6s, AT+, 66, TT, AA

You can even take out half the AQ/AK combos that don't contain the Ac and I bet we're like a 2.5:1 dog.