After the PC takes the initial swallow whole damage on the creature's turn, for the 2nd round and on swallow damage, is it on the PC's turn or the creature's turn?
Looking at various creatures with the Swallow Whole ability, I would say that it would be continuous damage on the round after the actual Swallow Whole maneuver.
Looking at various creatures with the Swallow Whole ability, I would say that it would be continuous damage on the round after the actual Swallow Whole maneuver.