5 second Presence Detection (Bluetooth or Wifi)

That’s possible but you would have to define some priority first.
Which one would win if wifi say you are not_home, bluetooth say you are and owntracks say you are at work (battery died while being at work or smth like that)?

There is many post on this topic:
https://community.home-assistant.io/t/using-multiple-trackers-in-groups-to-detect-presence
https://community.home-assistant.io/t/presence-detection-with-multiple-devices-multiple-trackers/