Finally, someone keeps up
Most Geminis have had the experience of watching someone’s eyes glaze over mid-tangent. Here, the other person just takes the tangent somewhere better. They trade links and voices and impressions of people they both know. They’ll read the same thing and argue about it, then swap sides halfway through to see if the other position holds up.
They tend to give each other a lot of room, too. Neither one takes it personally when the other has a new obsession or a large group of friends, or changes their mind about moving to Berlin. Life together is busy and rarely boring.
Everything but the point
For all the talk, two Geminis can be remarkably good at not talking about something. If one of them is hurt, a joke turns up. If it comes up again, there’s another joke, and then a really interesting fact about something else. Both are quick enough to dodge indefinitely, and each one knows exactly how the other does it, so neither calls it out.
Follow-through is the practical problem. There are three calendars, nobody’s sure who told the landlord, and the appointment was for yesterday. Both can also get quite cutting when cornered, because they know where to aim, and words said lightly by a very quick person can land heavily.
Slowing down on purpose
Have a phrase that means “I’m not joking now”. It sounds trivial, but it gives you a way to stop the game. Try one walk a week with phones off, and let one of you finish a whole thought about something that’s actually bothering you. Give the dull jobs to an app or a shared list, since neither memory can be trusted.
Same Sun, but your Moons may need different things, and that’s where the talk runs out. Moon signs are a good place to find out what you’re each not saying.