When you follow the link and some other klicks u can see under
that iwd has a new revision 2.4. Then u can test this software part. I did that with my Raspberry Pi 4 (RPi4) and did 101 tests (101x times I swithed the computer off and on) and 97% of these runs were good, only 4 were bad (means no autoconnect). No autoconnect means you got an IP but not the wifi interface really up.
Till today, nobody nows why this is like it is. And because my system starts some news feed at the bottom, I can judge how fast the connections get etablished. Is the text short, did it take a longtime for connecting the WiFi-interface, is the text longer (it had more time to print) the time to bring up the interface was shorter, so the news feed "printer" could print more letters. Means the connection was built up faster.
What you don't know, that I don't do that manually, there is some mechanism were you can tell the machine, reboot after being 30 secs up and then reboot yourself. I count the loops and say what the computer tested by itself when I was doing something else.
That was now the long version of what that means.
The second answer I would say: As long as your hardware will function, maybe 15 years, maybe 5 mins. Nobody knows that. When your system has an RTC (Real Time Clock) your clock will run with quite a good time till the battery is empty, otherwise you could have 15 years just your personal but wrong time and date.
Aehmm, I forgot to say Welcome back