When Primus and Unicorn were made, just after that, a group chat was made for all the Cybertronian-esque life forms to be created. Fast forward to 2025, after the Earthspark events have ended, AND the prequel movie, Transformers One, has been out for a while

Optimus Prime (G1): Greetings.

Megatron (G1): Prime... As usual it's an inconvenience to see you here

Orion Pax (One): Okay, this is weird. You look like us, but older.

D-16 (One): Remember, they are our future?

Orion (One): Right, forgot that.