[Faramir]

There are a lot of "nutted" hands in your range, which he cannot fold out. (A2, A5, AJ, AA, JJ 55, 22 QQ, maybe bd hearts). And QJ would be bad since you would check behind all marginal hands, and you really have one ofthe nutted hands and wouldnt fold them or air. (so calling QJ would be optimal)

So i think he has a nutted hand himself that beats all of those hands. The problem is :I can only think of 4 hands here (KhTh, that didnt barrel turn to not get raised of, a weirdly played 34s that didn't barrel, or some 5h4h combo (pair+gutter+flushdraw) or maybe he has JhTh (since you appear to call flop donkbets light.)

Concluding: there are 2 things to say: he cannot move you off the nutted hands, so he shouldn't bluff here too often and only valueraise straights and flushes here.
But he can be on tilt, so he might not take that in consideration and do something stupid (maybe even with Khxx as blocker for the nuts), or make thin turncalls (with naked fd) to win it all back?. While his line is only congruent with KhTh and JhTh which is a really thin valuerange.
Up to you if he is so tilted that he can do some stupid things, or is thinking clearly and really has it.
Any timing/sizing tells? 2340 seems a fancy bet, which is usually made with nutted hands... since while bluffing he wants to look solid (like 2400)