Lost Apple Watch series 6 but Find shows it was near me daily

I lost my Apple Watch about 2 weeks ago. However when I use my Find app, the location of my watch is shown to be at my home! And it continually updates the date and time it last saw it here.

By now, I am confident that the battery is drained on the Watch, playing sounds does not result in any noises I can hear, but once a day the time it connected changes.

Searched my condo top to bottom but cannot locate it!! Is this a false reading from Watch and the find app, or is it really seeing it within the radius it shows?

Also, any other way to try and track it within my condo? Ie Bluetooth signal, etc…. But of course battery is drained!

Any help or insight appreciated! Support, just said, well it must be there. But with a dead battery?