Is it permissible to reconcile with one's wife during the iddah (waiting period) of a revocable divorce, without her knowledge or a face-to-face meeting, and with the testimony of two adult males?

If the divorce is revocable, the husband may take back his wife as long as she is within her waiting period (iddah). Her knowledge or consent is not a condition for the validity of the revocation, but it is recommended to inform her. Witnessing the revocation is required, and the preponderant opinion is that it is permissible for children to witness it.