Originally Posted by
DanTravels
... or gamble that your 12-hour flight from London will in fact get in on time or early, and you'll be able to make the connecting flight that's an hour at most from its scheduled arrival.
Last time I attempted this, NW adjusted the scheduled arrival and departure times on both flights and my 70 minute connection turned into a 35 minute dash. So a little extra caution is in order especially if you are buying the tix a few months out.