A strange reality glitch

A few years ago, I was seated in my kitchen on the desktop computer. I was the only one home at the time, and it was in the middle of the afternoon. The door to the garage makes a very specific noise when it opens and closes; I don’t enjoy being home alone (partly because of my fear of the supernatural), so when I hear the distinct noise, it triggers a huge wave of relief and I usually go to greet whoever has relieved me of being by myself. Anyways, it was dead quiet in the house, minus the clicking of the keyboard. I heard the door open, and my stepfather’s whistling filled the house. Something to note, my stepfather and I are very close, and him and I are very strong whistlers and almost always whistle together just for fun. So I know his whistle like the back of my hand. I heard the sound of his shoes being taken off, and the jingling of his keys as they were hung up on our key rack. I heard him walk to the washroom, which is adjacent to the garage door, and switch on the tap to wash his hands. I stood up to go welcome him home, but when I turned the corner to the hallway where the washroom and garage door reside, the sound of the tap was no longer running. I walked a little further to see that the light wasn’t even on. I checked our garage door area, only to find my stepdad’s shoes and keys nowhere. I’m seriously freaked out by now, thinking that there’s someone in the house. I called my stepdad, he picked up saying that he was driving home. I was dumbfounded... literally had no clue how to respond. I just walked back to where I was sitting before and waited until he got home, only to have the same exact situation play out only with him actually here- whistling, tap, and everything...