Originally Posted by
cheltzel
+1
Since the OP is on separate tickets, lounge access could be dependent on having a boarding pass on your departing TP flight. Also if the OP has checked luggage, you will need to claim your luggage in a somewhat timely manner. If they go off the airport property, is there a left luggage facility service at EWR?
Since they're staying on *A, the OP *should* be able to check the lugguage all the way through from BOS.
TAP's website suggests EWR check-in starts 3:30 hours before departure.