In my opinion the turn raise is not necessary. Specifically your hand reduces some important draws in V. For example, villain cannot have in his range 7-8hh (possibly one of the combos we don't want to block). From our perspective, we do not wish to raise the turn with a hand like Q8s, for the same reasons (liberate more draws for the range V). Further the opener has all the important "kickers" so we don't want isolation with the top of his range.
But if the idea on the turn was to represent a delayed bet that we could have made on the flop, that definitely improves our range on the river. Because on the turn, we were able to bluff with a hand like A8hh. This means that our OTR range contains more bluffs than values, because if we had a hand as a set of 6, we would probably be raising a lot OTF. So it makes more sense that we have weak hands like 8-6 that begged for fold equity for V OTT. So the villain could keep his A6s combos (because the fake blocker never really existed) and seek to trick us OTR. Additionally, the villain could use AKs and AJs as bluffs.
Our turn bet definitely neutralizes combos of villain like 9-9 and TT, which would not bet OTR because they work better to catch bluffs.
Greetings.
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