Three pages in and not one mention of the actual football match people are supposed to be attending. Half time is primarily a rest for the players. If you extend it further, players will get cold and require another warm up before the second half starts.
Some people on here seem to have forgotten that a trip to the Amex is about football rather than beer and pies
Until a few years back (OK, maybe more than a few) half-time used to be 10 minutes. Quite long enough for the fans who do not want to eat and drink.