Yes - but you forgot the seedings! Seeded team plays at home second leg.Ok, I've got my head around it now.
Win the group, last 16...drawn against a playoff winner.
Finish second, playoff against 3rd placed team from CL
Win the playoff, last 16...drawn against a group winner
Lose the playoff....buggered
Win the group, last 16...seeded and drawn against a playoff winner (can't be an English team).
Finish second, seeded and playoff against 3rd placed team from CL (can't be an English team)
Win the playoff, last 16...unseeded and drawn against a group winner (can't be an English team)
Lose the playoff....buggered
Win the last 16 game - quarter-finals, no seedings (and lose to Man Utd with a dodgy VAR decision)