Hello again,
Travelling with non-status companion on approx 7h East Coast gateway to Europe.
30 AB and EF are available and I've chosen AB; bulkhead 15B is also available.
Companion is junior associate and intents to work while I intent to sleep and prefer window; companion also seems to need a bit of supervision

FWIW.
My instinct is to take 15B and 30A, hope that 30AB or 30EF will remain open, and wing it-- put companion in 15B and s/he can come back to row 30 if needed / nervous.
Any thoughts? Is 30B a better seat than 15B, for instance, all considered?
As always, TIA for responses.