Some extra stuff about this:
If your boxing an npc and you need to tele, you can instantly tele as soon as you get a kill on the npc. (in some cases, needs 100% confirming how this works but its interesting)
If a friend is boxing you to lose your skull, switch to boxing your friend after skull is gone, you should be able to tele while still boxing
Only one person needs to box on the other, you don't have to autoretal ever