Some had a loose arc to them. Connery’s Era had a buildup to SPECTRE, post-Lazenby Bonds (Moore, Brosnan, Dalton) each referenced Tracy’s death, and Diamonds are Forever’s cold open makes a lot more sense after On Her Majesty’s Secret Service. However, with the exception of For Your Eyes Only’s cold open, all of the Bond movies before Craig worked as stand-alones.