Actually, Seg/Brainiac sucked up into this mindspace, where the two are separate and can talk shop. Brainiac wants to fuse ever more closely with Seg's system and steal precious biological resources, leaving Seg to ponder over the possibilities of this prospect. Intriguing...
Jayna-Zod has finished cleaning up the mess she made when she and Dev dispatched those Sagitari. She wants to know why Dev escaped from Kandor. He tells her that Lyta-Zod became General Zod's right hand woman, and he got disillusioned with the whole corrupt system. This is all news to Jayna.
Jax-Ur has an idea she wants to run by Val-El. If they can mobilize a small batallion of rebels, give them some of those oxygenators, and send them out to the next Kandor drop-off point and Top Site on Wegthor, they might be able to ambush both the incoming Sagitari and put an end to the deliveries all together. Let's see what happens.
Seg/Brainiac has led Adam to this underground lair, complete with tendril machinery. This is where Seg can begin the separation process to fissure him from Brianiac. But when Lobo starts bellowing, Seg/Brainiac becomes Brainiac/Seg again, and enters fight mode.
That's just when Lobo descends into the lair as well, and tries to seek revenge. He doesn't know that when Brainiac/Seg hooked up to the tendril machine, it activated a forcefield that can amputate limbs. Sucks for him.
Lobo doubles down on the forcefield, whips out his weapon, and decapitates himself in the head because he knows that now the rest f his body will regenerate inside the space with Adam and Seg. Gross but clever.
It couldn't have been soon enough. Lobo regrew his body, managed his way past the forcefield, and was about to kill, maim, mutilate, and otherwise destroy Adam when Seg harnesses the power of Brainiac to send him across the room via air mail.
The Zeta Beam beams Adam and Seg to the Outlands. Seg dies a little bit in transit, but it's nothing that a little CPR can't fix — thankfully, Adam's from the future and has that knowledge. But there's no time to lose: they've got stuff to do!