Mission 12 ZONE OF CONTACT issue at Tango WP

[Sway]

Hi there, 

I ran the mission 12 two timesand got the same problem. 
After the refueling step, I follow the Hammer to the Tango WP. We are instructed to standby by Clearwater. The Hammer flys from Tango to Big City and vice versa. For hours!
Nothing seems to be triggered at this stage, not any radio calls from Clearwater, Black Knight. Not even from the Hammer. 

I attached screenshots of the message history. 
The track file is 75 MB large, so it can't be joined here. (limit is 50 MB).