Servicing my bike today. My chain does NOT have a master link but I was hoping to take it off and degrease it with popping out a pin. I've taken the rear derailleur side plate off so the chain is free on that end. I thought I could open this connection on the front (Sora) derailleur:
However, looking at the back it just appears to be a rivet:
Am I missing something? Is there no way to free the chain from this FD without breaking the chain either with a master link or chain tool?