Complex sentence: The telegraph office manager was a friend to the Earps and showed the message to Wyatt, delaying its delivery to Behan long enough to allow the Earps and their associates to make ready to leave town Tuesday evening.
Split into simpler sentences: The telegraph office manager was a friend to the Earps showed the message to Wyatt. The operator agreed to delay delivering the message to Behan long enough to allow the Earps and their associates to make ready to leave town Tuesday evening.