Why would a device (Apple Watch) that I didn't bring with me, last show at a location I was without it?

Left an Apple Watch in my beach bag two days ago at home. Its battery died over the course of 48 hours. When I notice today that its not on its charger, I immediately check the Find My App to see where it was last seen.

The watch showed it was last seen at a restaurant that I visited a few hours prior. I look at my ring cameras and see that I wasn't wearing it when I came home, so I call restaurant asking if it was turned in. Since they didn't have it, I enabled lost mode on the watch.

I then check the ring camera from when I last left the house and I'm not wearing the watch. Another search of the house and I found it in the beach bag.

Question is, why wouldn't the last location show the house if it was in the beach bag the whole time with wifi access and bluetooth proximity to my phone up until it died? Why would it last show at a restaurant that I did visit late last night, if I did not have my watch physically with me?