> (For example, the sample design on contracts leaves out crossing responses, a very common event in where rejection or acceptance of a contract is sent after an offer has been revoked but before the revocation has been received.)

I tried Googling it, but I think my terms are wrong. How is this typically dealt with? Does one stricly supercede the other (i.e. revocations win over acceptances), do postmarks come into play, or similar time of transmission evidence?

This is all off topic, but I never thought about this scenario before.