Still the same effect. Suppose your wife says that she has posted a letter saying that she is ready and willing to live with you. You will say that you have not received such a letter. But she will say that she has posted but she does not know how you did not receive it. DOES THIS SORT OF CONDUCT AND ARGUMENTS LEAD YOU ANYWHERE.
After all, any communication to be meaningful should be served on the other party. There are declared / approved modes in which the communication can be served or deemed to have been effectively served.
As such, if you have clear intentions to press for RCR, then ensure that the requisite application / documents reach your wife.