Does Missed a Session Stack?

I have a player who has missed a few sessions. Do I treat it as having missed one session or do they get to apply the Missed a Session rewards for each session missed?

(We already have an alibi for his character going missing - his character and another player’s character were fighting for the romantic attention of the sherif in Shaleburrow and he lost the contest. So it stands to reason that whilst the rest of the patrol has been travelling over the scent border, he has sloped off to win back her affections without the competition around!)

I would only treat this as a missed session: no double-dip benefit.

Yeah, no stacking.