Does this talent work at sea? I see nothing specifically stating that it doesn't, but the existence of the SAILOR talent (which is literally the same as PATHFINDER but restricted to only working when you 'LEAD THE WAY at sea') kinda implies that it doesn't. If it does work at sea, would these two talents 'stack'?
Pathfinder is used to "<> finding the right path through woods and over mountains in the wilderness <>", while Sailor is used to " <> steer rafts and boats over unknown waters <>"
How does the rank 2 'this activity counts as REST' ability work when your activity is interrupted?
It allows you to count the quarter day travel as REST even though you are walking. The travel can still be interrupted (GM discretion) which have the same effects as interruptions on a normal rest action has (i.e. no recovery).