How long should installation of spring take? [BMW 540i]

i could get the rear shocks free from the car, but the rear control arms wouldn’t let the top swing out to release it from it’s grasp. looked up a few DIY’s on google to at least get some pictures and what not. unbolting the filler neck and unbolting the evap box and lowering both of those guys down with the inner fender liners gave them enough room that they almost fell out. not difficult, just gotta know what you’re up against, and it’s a lot of fiddling. rear most pillar trim, rear deck, rear speaker box enclosures (made by nokia of all people, lol) and you can finally access the rear shock mounts.