Just also tried the bus T4-T5 for the first time and it was a nightmare. The bus arrived on time at the gate as announced but it waited nearly half an hour with doors opened and let people jump on to a point where I thought I would suffocate or be crushed. Finally it started moving but then stopped again 5 meters later and waited another 15 minutes... this time with doors closed. Lot of angry people shouted but the driver pretended to not even listen, while the first 15 or so around his cabin where obvious Swedish. They didn't try to talk to him, just stood sheepishly around waiting for the situation to go away'and effectively shielding the guy from the rest of the angry mob in the back of the bus.

On my way back I walked and it took including security 10 minutes.