It's a lot, getting all of these thoughts in his head. Trying to sort them all out, just in case he might lose contact or the ability to pull both Senku and Tidus back if everything gets too muddied. It's like a cluster of yarn he's trying to detangle over here, trying to separate what's Tidus, what's Senku, and what might be weird void influences on the line he's got with them.

It's hard, but as long as he focuses, it's possible. And it helps that he's so in tune with everything going on here. Able to understand Tidus's explanations just by sharing a mental link with the other. Able to stay in touch with Senku's emotions about all this.

I don't want to either, Inigo sends out towards the two, first and foremost. He wants to make that much clear. He doesn't want to leave things like this either. He doesn't just want to ignore the way the train has screwed up worlds, but.. It's dangerous to stay there though. I don't know how long we have.

There's a small pause, and then he adds..

Definitely not long enough to do all that.

Because Senku is admitting that it'll take a long time. And they don't have that before the train moves on. And he has to pull the two of them back before that happens, no matter how bitter the realisation is.