No, there's a mistake in the statement.

Counter-example -- what's happening _right now_ at a distance of 20 billion light-years from us?

Or another question -- what happened 1 hour _before_ the Big Bang?

Both questions are already invalid by themselves.

UPDATE: I should've tried to answer my questions to show what I mean:

1. At 20B ly from us there's no space nor time to talk about. Physicists talk in formulas, and I suspect if I knew how, I just wouldn't be able to come up with a formula to formulate my question.

2. "before" the Big Bang there was no time itself to say "before".

In other words, we can only reason about, or imagine, reason about things, within our light cones. Outside light cone questions become invalid to ask.