Hi Vespa68.
I've researched this a lot and found that only a small part of your soul actually comes into a physical body.
A small part that separates from the higher self.
It's totally possible to have more than one life at a time.
I know that I currently have another life on Copenhagen, she's in her early 20's now, I'm 36.
I do also have another life that's ongoing at the moment but it's not on this planet.
So, yep, loved ones can meet you when you return home, even if they have incarnated again. And yes mediums can contact people who have crossed over, even if they have also incarnated again.