I would say A6 could be withdrawn but not replaced by A1. A1 must wait until the next opportunity to substitute after the ball has been made live and the clock has been started. That is how I interpret the process.
I may be wrong, but I doubt it!
Smoke
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"Your Azz is the Red Sea, My foot is Moses, and I am about to part the Red Sea all the way up to my knee!"
All references/comments are intended for educational purposes. Opinions are free.
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