They merely detached a sensor and a bracket securing the cable harness, without removing the manifold. Appears to be uncomplicated? Utilising the appropriate socket length and extension, etc. It may be possible to accomplish this without removing anything except for the hose and the valve. However, the visibility is suboptimal, and you will likely need to do a laborious process initially, subsequently determining the appropriate socket, ratchet, and extension combination to remove it without disassembling more components, hence facilitating a more efficient method for future attempts.