There is a limit on how many berries can be fed. It won't be possible to just sit there and continuously feed berries to prevent the gym from falling.
Similar to prestiging the old gym at the same time it was under attack. You could slow the defeat, but never pestige fast enough to stop it from falling. (Unless you wer a bot or spoofer.)
gym live defending
So how does gym defending work in new update?
If opponent attacks gym i just go feed berries for the pokemons while they try take motivation down?
Answers
and you are wrong, i have defend gym many times, because they are noobs who attack gym with shit pokemons and their attack speed is just slower than what i can prestige (legit)
Just before update i was watching some noob trying to take gym down and god it was so awfull slow....
I was thinking that i could just go there and save the whole gym (once again) and every defender inside it, but i didnt care, cus i had my 2900+ blissy there, so it would easily be last man standing after all other pokemons have failed.
The problem with many defender is that even noob can beat them, it just takes much time.
But they cant win Blissey cus they run out of time.