Supplementary after a failed exam, and prereq waivers, has anyone here actually been through it?

Two quick questions for anyone who's dealt with this at ECU.

1. Has anyone actually been offered a supplementary assessment after failing an exam? I know the criteria on paper (first 60 credit points, 45+, and it's the Panel's call), but I'm trying to get a feel for whether they really offer them in practice or if it's pretty rare. Postgrad experiences especially welcome.

2. If you failed a unit that's a prerequisite for later ones (which feeds into a few next Sem units), were you able to get a prereq waiver to take those next units while repeating it? Or did they all just get blocked until you passed?

Cheers for any first-hand experiences!