The bite from Astarion does not block the scene. I had it with and without the bite event. My friend and I concluded that the Weave scene comes after Gale confessed that he had to absorb the artifacts powers, but before the PC gives him an artifact.
But that's just a guess.
Hmm, and yet i got the Weave scene after giving him 2 items and witnessing his death.
But i did spend a lot of time at camp. Like, after every battle. Took a lot of camping to get the scene.
