For Vanilla Co-op Aeon Missions 1-3 and 6 the Audio for the Mission briefings is played out of order. It seems most of them play the voice that is 2-3 lines in then loops to the beginning intro. Maps 4-5 are played correctly.
Aeon Mission Briefing out of order audio
@caqde You might want to consider reporting this on the FAF Campaign Development Discord too as it's more likely to get the vision of the Co-Op devs there.