You and him thought to have a race to the end of Entropy one time. Wally West was thinking about it, since he believed that you were nearly in the same level as Wally himself, as he thinks so.

“Are you sure about this? We might break alternate worlds as we go on…”

As Wally thinks about it thoughtfully, not wanting consequence to happen in this reality. But you knew and you SURELY knew that you both have beyond light speed reaction time. There was no point in arguing about it.