I am off this project for a short while, but i will be back on it in a week or so and follow up as this topic interests me

in the meanwhile i have done a workaround by setting CONFIG to WDT ON, then when it falls out of NAP i check IOC flag and i can tell if it timed out or got interrupted and act accordingly

this burns a tiny bit more power than i had wanted (as it wakes up periodically) but i have big battery and i think it will be insignificant compared to self discharge

pedja089, i will try your @ sleep suggestion when i start project again