Trying to understand process

[happytm]

I am trying to understand the code process.I think Esp device try to scan for known mac id and then control led behavior if I am not mistaken.

I have some questions:

How long this process last (hopefully in milliseconds) if known mac is nearby ?
Instead of controlling leds is it possible to send esp device's mac id to device it detected without using IP?

Can we put esp device in deep sleep and every 10 minutes or so it wakes up and look for known mac id device and if found respond by sending it's own mac id to target device (in this case target device is raspberry pi with monitor mode activated) and go back to sleep again ?

I am trying to achieve following goal using ESP-Now protocol on esp device:

HarringayMakerSpace/sonoff-adhoc#1

Please help me.

Thanks