As the saying went, you never knew the moment till the moment after.
Probably he would have to wait till the last moment, then charge in and hope that nothing balked him.
I can't understand why they left it till the last moment?
So it was a question of waiting till the right moment.
Maybe just a stubborn determination to fight till the last possible moment.
"You did wait till the last moment before calling me."
And he had to keep on holding it, till the last possible moment.
"You must keep trying till the last possible moment."
Can't wait till the moment when we can finally download a car.
No, I hold on in there till the last moment.