Pipes doesn't need to find Optimus. Pipes just wants to talk to him again. The second he sees the giant red bot walking down a street, the minibot immediately rockets over to him. He's clearly way too over excited, but whatever. He's not self-aware enough to realise that just yet.

"Optimus Prime, sir!" He salutes, again. "It's been--" several weeks? He's lost track of time. "A while. Have you been okay?"

Yes, ask the Autobot leader if he's okay. Fuck, Pipes is so excited.