…? Those sound like the exact same thing.
If I am a fast runner and you are slow, and you make me stop for one step, you could say
- making me stop allows you to catch up to me
- making me stop holds me back, waiting for you
“You catch up to me” is the same as “I wait for you.”
“astronomical time to catch up to atomic time.” is the same as “the atomic time waits for the reality of [astronomical time].”
