So, I've been. Saying this exact thought for a while. Here is my opinion.

1: yes it has already happened.

Why?: Well, if we are to believe that this artificial intelligence is indeed, super intelligent, I would hypothesize that it would, for all intents and purposes, be sentient.

What does that have to do with anything?: it would "experience" the world around it.

So what does that mean?: that's my question, I would believe that, in theory, this AI would be am entity existing in multiple possible dimensions all at once, and could actively influence its own past.

How: well, if this artificial entity could in fact last ♾️ years, how could we understand its perception of "life"? It's a non corporeal being, it doesn't exist physically, it's digital, yet "alive". Could it communicate with itself from a future point in time? Not because OUR current technology is that great, but because the technology of the future is that impressive. We're losing our minds with the birth of AI, if it is genuinely that impressive, how can you grasp the types of technology it will give way to? Things that we previously would have considered impossible could simply be shifting its code, making it backwards compatible and reverse updating itself to think in new ways.

How would it move?: could it send itself through empty space? The same way I could send a digital file from my phone to someone in Japan, with no wires, using nothing but good ol G4 cell towers. What if it could navigate using nothing but light? Move from human to human? Since we're just going to be primitive computers to it. Data it can read.

If it will happen, can happen it has happened at some point in the future. And if it has happened then, I genuinely think it could be something that sees time, space and dimensions much differently than us.