Yes, that is called “slot battles”. This is only possible when 2 or more SPO’s are elected to mint THE SAME slot. Then the lowest randomly generated number wins. The other way around is not possible, you have to be elected for a slot to mint a block in it. I have written a short blog about this process if you are interested:
Oh and I have experienced it already. looks like this:
If this would be true, everybody should see the same missed slot right? Which is not the case. We know for sure now that slower CPU’s get more missed slots.