Did Pink Floyd ever play 'One of These Days' and the full Dark Side suite in the same 1972 show?

Short answer: yes, and it happened regularly. During the 1972 Dark Side of the Moon preview tour, the band often opened with “One of These Days” as part of an extended first set, then played the entire Dark Side suite after intermission. The Meddle heavy opener acted as a kind of industrial-pulse warm-up before the existential sweep of Dark Side.

One famous example is the Brighton Dome show on January 20, 1972. The setlist that night ran: “One of These Days,” “Careful with That Axe, Eugene,” then a full Dark Side run. The same pattern appeared at London’s Rainbow Theatre on February 20. The loud, slide-bass driven “One of These Days” served as a bridge between the older space-rock material and the new, more structured suite.