What is the latest re arriving at 2G and then transferring to 2E (specifically, NUE-CDG connecting to CDG-LHR?) I have around 1h20 and the London flight would be the last of the day so I would be reluctant to miss it.

Am I right in thinking there is an airside bus from 2G to 2E, and I will exit Schengen in 2G before getting on the bus?

Thanks in advance!