Hello Lal,
I have to add. What a great job you are doing with this website. Since it is very difficult to convey knowledge, I can see this even in such a small text.
Regarding answer 1.
A small note: The question is whether the GANDHABBA can really see and hear when the human body does not trigger. Since Iddhi powers or the right Cittas must first be present or stimulated by Nama Loka/pañcupādānakkhandha. Otherwise, with Nakose you would always see immediately. I see it’s all very complex and not entirely clear.
Buddha Dhamma is very deep!!