For the SkyTeam (AF) method, I am seeing certain flights (mostly MU) where there is availability A-B-C but nothing shows when you search B-C itself. Availability/FS option shows zero. Is it safe to assume there is no availability on the flight in question or are they applying married segment logic to awards too?

Also seems to be a large discrepancy between the SkyTeam-AF and the Availability-FS options when it comes to MU flights in general.