I did have an MD88 boarding between T-35-40 a few days ago. I left the club no earlier than T-45 and about 60 seconds after I arrived by the gates they started boarding.
Then again...my flight to DTW yesterday, an A319...I thought I read the GIDS wrong...we boarded about T-25 or T-20...I could've been in the club sooo much longer

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We only had 13 people on the plane.