I'm using my Tapo C225 camera with a Synology Surveillance Station. When comparing the recordings from the C225's memory card with the Surveillance Station recordings, I notice that in many...

Use Tether application.

1 - It is up to your devices, but probably yes. 2 - Yes you can, and also you should do like this. If you go far away from first and near the second one, your device(s) should connect the nearest one.

Acumulative.