great course !
About offline ref though - loading as offline ref is a very cumbersome way to work. Switching between the two views is a PITA. I would just slap it on top on a new layer -, set op to 50-60 - toggle enable on / off and align stuff viusally. If you need pixel perfect aligenment of say, PiP, you really need to jot down the pos/scale values from PP/MC and manually enter them into Resolve. I see no use for loading as offline ref the way its described here- am I missings something?