Interesting. I was on the same flight last night.

I never heard any captain announcements, but I was at the C SkyClub which was just a few gates down. Went down to gate at the first delay when GA said there would be delay (30 minutes). Back to club and stayed there for a while through the rolling stuff.

I do recall seeing a tech get on the plane I think when 1st delay was announced (pretty sure that was when).

Anyway, was definitely a bumpy ride. Would never have guessed MX was an issue.