You are correct. If you have a chance, there is a video of the Wrecking Crew and their incredible involvement in so many hit songs of the 60s and 70s. Carol came up with that intro bass line off the cuff.
Seen that, “Standing In The Shadows” , “Muscle Shoals” doc...... Lol. Being a picker, it’s fascinating to me. Recently became acquainted with a writer living near us now. Looking at his bio is, uh, impressive. Working on some of his stuff now.