Can I jump in on this part here? The arrivals part? Because the reason Natasha hired me was because I've been combining magic and tech and have my own version of an arrivals/departures system for people from my previous world.
Cause what I've found is that everyone from the my previous world shared a same...essence? I haven't figured out what to call it yet. Used some artifacts and jerry-rigged a system that's been working for me. It's how I knew my friend was gone.