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Well, I'll give it my best...
I would say that the two incidents are completely coincidental. Unless some of the top end pieces that got sucked into the cylinder made it past the piston rings, then they would theoretically have no way to make it into the oil galleries, or the pan itself.
One would think that the high oil pressure at startup (before warming) is caused by the thicker oil in the galleries, thereby giving the pump much to 'push' on, providing that pressure.
Perhaps the oil pump is wearing out, with not enough gear left to push the thinner oil as easily.
I'd start by checking the actual oil pressure sensor first, then move on to removing the oil pan, checking the screen, then pulling the oil pump itself, tearing it apart and checking gear clearances with a feeler guage.
I've never taken a pan off of one of these vehicles, but I'd set aside an entire Saturday to DIY.
Regards,
Steve
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