"How big a gap are we talking?" If he seems a little eager, simply imagine what it might look like if he weren't trying so hard to show restraint. Because it sounds like something he would say of the seventy years that he missed, and he wonders if something similar happened with Eden, though it seems highly unlikely. It's not every day that someone gets trapped under ice, after all, and Steve knows that it's too much to hope for that he meet someone else who endured the exact same thing. Perhaps, though, she knows what it's like to wake up in a world that she doesn't quite recognize. A coma doesn't seem so far from the realm of possibility, and though he hates to stir up bad memories for her if that's the case, he also can't let that comment go without asking her to elaborate.