Lost 2 movements yesterday. U2 following had to bin it when EK rolled to Julliet (as they said they would when asked by LGW Tower) with one lined up from Alpha. When asked to expedite, the chaps said they had a speed limit once within the stop-end. Skip and I mused that perhaps that wouldn't have been an issue if they were able to avoid using said stop-end.
I do remember being told by someone that brake temps were an issue as the turnarounds are relatively short.
It's worse in LVP's. 27nm gap required apparently.