Assalamu Alaykum everyone, recently I have been having problems comprehending the concept of Istighatha and invoking those saintly entities other than Allah. I have a few questions, 1. Are the imams (عليه السلام) available 24/7, as in, are they omnipresent and always hear the duaas we make to them? 2. If they can hear our duaas, then what if millions supplicate to them at once? Do they hear them all at the same time? 3. Is it not a contradiction that if the imams (عليه السلام) hear millions all at once? Owing to my limited understanding, I believe this is an attribute of Allah (سُبْحَانَهُ وَ تَعَالَى). That's all for now, Salam.