Strange conversations are normal at this time; yes, it sounds like he was doing some fishing..but the fish weren't exactly biting, and he wasn't making any sense.
I, too, had some VERY strange conversations with my husband during this time, but learned to let them go, didn't read much into them, as words/questions don't mean anything..it's the ACTIONS I looked at.
You already knew he was talking weird; just let him talk as weird as he wants to...it takes on a whole new meaning for them when things are spoken out loud, even if they sound nutty or strange to you.
You may never know exactly what everything he says means, but he'll forget the majority of it, or even all of it as time rocks on. And even if you did understand what he means, you're sane, remember? He's insane at this point. Both of you are operating off the opposite side of the spectrum of sanity, if that makes sense.
Keep following his lead, and I remember that IF I tried to pick up a thread of conversation that got interrupted, he'd NEVER remember saying what he said, anyway. That was the QUICKEST way to start an argument, and get him spewing at me. LOL!
I had to learn that after a few times of trying to pick up dropped threads of conversation, as I remember.
Not everything is worth answering or wondering about.. this is MLC after all, a land of weird conversations/occurrences. Just let it all go, wait and watch...he will come to you in time.
Hope this helps.
Remember, as each person is different, every MLC/Transition is different..what works for one may not work for another. Most of the time it is trial and error for ALL involved.