CS:GO - How Long can CT’s Block a Corridor for?

How long can CT’s use their weapons and utility to block a corridor for? Let’s find out. 0:00 - Intro 0:21 - Start and end of round 1:20 - Smoke 1:42 - Fire 2:46 - Flash 2:53 - HE grenade 3:17 - Negev 3:40 - How many CT’s does it take?