I currently have a central a/c unit connected to a 220v 60amp breaker with a 60 amp disconnect pull within 2 feet of the a/c unit. Can I use the same disconnect to run a 2nd line to a future hot tub.

No! Both devices require dedicated branch circuits.

And the A/C circuit probably does not have a neutral which your tub will most likely need.

Thanks, you confirmed my suspicion.

And the hot tub will also likely require a GFCI circuit breaker...