After a few hours of silence and meditation, Spock/Kirk were laying on the bed.
The silence was only broken when Mr. Spock said "It will not work."
"What won't?" Kirk responded, also using the fused body to communicate.
Stage 2 meant that they shared their thoughts, so the only way to properly communicate is to talk to each other using their body and voice.
"The vile of blood Doctor McCoy needs." Spock sat up in the bed. "He said that half-Vulcan, half-human blood is needed. But because of our current state, the blood that we possess is no longer half-Vulcan. It is a third Vulcan. And the human part is two thirds. Causing the vaccine to not succeed as well as it should, if it succeeds at all."
Kirk nodded, "okay... So right now, our blood is useless... We're useless... There has to be something we can do to help them."
"We have just entered the beginning phases of the side-effects. McCoy had said that the beginning is the easier portion to withstand. It is the third and above phases that would actually bring us pain." Spock explained. "Although to Timon and Kals species, their pain tolerance far surpasses humans or even Vulcans. They described phase 3 as minor uncomfortable headaches."
Kirk walked to the mirror and looked at himself again, this time with an expression one would have in a time of bravery or determination. "What you're saying is that it's going to get much worse... And the headaches would feel like someone taking a jackhammer to our skull?"
"Precisely." Spock also looked in the mirror. "Captain I disagree, I believe this hair colour suits you quite well."
Kirk smiled, "our thoughts must be merged, I think you've got my sense of humor."
"Captain, something is puzzling me. What would happen if we were to return to the fusing machine? The machine could not further fuse us together, so wouldn't a logical inference be that it would reverse the fusion?" Spock asked, crossing his arms.
"Well, Spock, we can take that chance but usually machines only serve one purpose and they only preform upon that one purpose. A toaster can't turn toast back into bread once it has already served it's work." Kirk replied.
"You are forgetting, Captain, the machine- unlike a toaster- is not of Earth origin. Machines from other planets may serve multiple purposes, one being a reversal." Spock said in confidence.
Kirk shook his head, "you must be losing your intellect, Spock. Wouldn't Kal and Timon know their machine could reverse the fusion?"
"Not entirely. Sometimes people need to test the machines before knowing its full potential. Perhaps Timon and Kal did not use the machine twice because there was never a need." Spock suggested.
Kirk sighed, "And if it doesn't work?"
"Well, I assume it would worsen our condition. Cause us to experience more pain, perhaps lose the ability to tell our identities apart." Spock answered.
"You're saying that going in the machine again could either fix us or make our situation worse?" Kirk replied.
Spock raised a brow, "Unfortunately, yes. However I implore you to make up our mind about entering the machine again before we begin to experience the third side-effect."
"Okay. I guess this room is equipped with our monitoring devices." Kirk stood on the bed and cupped his hands around his mouth. "Nurse Chapel, please get Doctor McCoy here right a-"
Without any warning, the captain fell on the bed. He was curled in the fetal position and yelling in pain. His hands were clutching his head as he began to rock back and forth.
The headaches had begun, which meant that time was running out for the Captain and Mr. Spock.