I booked my son's flights some time ago Brussels/Newark/MCO, and since booking, the flight times have changed about 4 times. He is no down to 1hr 29mins for making his connection in Newark. Is this enough time, considering he will need to collect baggage and clear customs & immigration in Newark? The Brussels/Newark flight is operated by United, as is the Newark MCO leg.
If not enough time, what can be done as he is on one of those economy saver tickets?