Tranfer time between CDG T1 & T2?
 

I will have 1 hour and 40 minutes to transfer between the TGV station in T2 and a UA flight in T1. What is the transfer time and is that enough to ticket and clear immigration?

I only have carry-ons and have premier status to use the biz and first-class check-in lines. Thanks!

Rough layout of CDG.

Shuttle bus routes. You'll want to take bus #1, running every 5 minutes. It takes about 10 minutes to T1.

This will be a tight connection, between the relatively poor on-time record of TGV's, the perennially late busses, and the 'come 2 hours before departure time' rule for flights to the US.

Thank you!