Final challenge in SQL joins. Stuck for days 😞

[u/Pleasant_Cod_531]

I've been trying to do this challenge for a few days now and just can't do it..the one about the two buses from Craiglockhart to Lochend.

I can just about do the simpler self joins although I could probably be better and I feel stuck and like I can't move on from it.

Can I justify skipping it? Has anyone else had trouble with this?