An indirect route for a letter

I had an elderly aunt who was resident in a nursing home half a mile away from my house. I visited her regularly and on one occasion, as it was approaching Christmas, we had arranged for me to take her out for a restaurant meal. On my arrival that day, I found her seated in the lobby, going through a sheaf of mail that had just been handed to her by the supervisor. As I approached her she pulled a letter out of the sheaf and handed it to me. "Oh - this is addressed to you", she said, as she casually handed it over. I reflected on how strange this was. The letter had been addressed to me, but somehow it had been wrongly delivered to the old folks' nursing home in which my aunt lived. The large amount of Christmas mail delivered to the home had been hurriedly sorted and distributed to the residents that morning by the office staff. Each resident got quite a handful of mail. The letter addressed to me was in the sheaf of mail given in haste to my aunt - who found it at the very moment that I entered the building. The significance of this was completely lost on my aunt, who could not understand that anything unusual had happened, at all. She had given me my letter and, so far as she was concerned, nothing remarkable had happened. The letter itself was of no importance at all - just junk mail.