He caught it. Marluxia smiled like a snake and nodded his head, just the once. That was an interesting detail, however. Axel and Saix had been a chance encounter in the field on the return. What they'd been doing out there was unknown; it wasn't as though the Arrancar had stopped to ask.

He tilted his head and looked at Vexen, carefully. "Why were they going to Midgar?" He asked.

As far as Aizen, and anyone else knew, no one outside of Khamja had known anything about what was to befall Midgar, or what had befallen Midgar. Had Axel and Saix coincidentally been in the area in the immediate aftermath? Had they been to Midgar and left prior, perhaps? Either way, they were a factor that hadn't been considered.