Actual Infinities

[ignoramus]

It's a hypthetical question.
Where'd you get 130 million from?

Need at least 65 million years for them to see our dinosaurs, and then 65 million years for us to see their TV.

You're right Gwynnie!
That's why it can't work.
Even if we find someone 32.5m light years away it won't work.

(32.5 each way to see the dinos) because they will only see earth at 32.5m years ago ...no dinos again.

OK, let's forget the other guys, We invent warp drive in 500 years and chase the dino light ourselves at a safe warp 9.
It's still going to take us 7 million years to reach it. Then we have to build the telescope as big as the universe to see the dinos up close.
Negative time travel seems to be physically impossible. Only relative forward time travel is possible.