This happened last night:
A Razorwing swooped down in a Lt. encounter and attacked. As a response the (Melee) hero wanted to play the Feat card Riposte after the attack but before the Razorwing went back up Soaring..
Riposte says: Play after a monster has attacked you with a melee attack. If able, you may immediately attack that monster. After your attack, the overlord resumes his turn as normal.
Soar/Swoop says: A soaring monster cannot normally be the target of a melee attack. However, monsters with Soar can choose to swoop down before attacking. If they do so, the extra range is negated until after the attack goes off, at which point the monster flies back up . Heroes may use interrupt attacks (even melee attacks, if in range) to attack a monster while it is swooping.
I interpreted this in the way that "flying back up" happens immediately after attack or is even part of the attack sequence (unless the OL decides to land the monster). So, either the monster flies back up first, making the Melee attack impossible, or both effects happen simultaneously and should be resolved in the order that the player decides whose turn it is (by extension using the clarification for start-of-turn effects and/or the priority rule of Feat vs. OL card, both from the FAQ).
Some heroes argued that the Riposte attack should be counted as an interrupt attack, yet this term is used in my view for Guard or Backstab attacks, which truly interrupt the OL´s attack sequence.
Thoughts?