Getting to CX (Terminal 1) in CDG
 

I have been googling this for an hour - still have no clue! I am arriving CDG in Terminal 2D on Easyjet from Bristol. I am leaving on the CX0260 flight to HK from T1. I have NO bags. Can I transit airside? The map of the bus appeared to suggest it would take an hour airside, is that really true? Or is it better to transit on the shuttle landside? I have 3 hours.

You have an airside shuttle, called the BLUE shuttle:
https://www.parisaeroport.fr/en/pass...minal-shuttles

It runs every 10 min or so and takes about 20 min between T2D and T1.

Hopefully, you will will have done OLCI for CX260.
Going landside means having to go through police at T2D when you arrive from UK, then at T1 when you leave France.

Planning to OLCI, but the last few times I flew (out of HKG, Manila and Singapore) it came up with "no boarding pass available, must check in at the airport". It's very frustrating. I guess I will find out soon (flight is on Tuesday).