Advice, please! Arriving on American Airlines at Terminal A at IAH and must uplift bags (3 mondo heavy ones) from baggage claim and slap onto baggage cart and somehow get to Terminal D for international flight check-in at AirNZ. Have PLENTY of time, but read online that baggage carts are not permitted on the TerminalLink automated people mover OR on the underground Inter-Terminal Train. Is there a way to walk, pushing my baggage cart all the way from from A to D? Am fit and have 4-hour layover. If so, is the walk underground (taking elevator down from baggage claim)? Just won't know what to do to get to a possible "walkway" once heavy bags are piled onto a baggage cart at baggage claim. Thanks!