Route Scheduling issues

HI all, first off things are not adding up for me. I’m working through scheduling routes.

and I’m super confused. I have the following route scheduled.

(ST1011) Departure: 7:00 from MSP to MDW Arrives: 8:10, Ready at 9:00 - Active
(ST1022) Departure 9:10 from MDW to MSP Arrives: 10:20, Ready at 11:10, When I activate this route, I get an Route Scheduling Error. could not be scheduled because the flights already assigned to this aircraft would overlap this route.

I have no other routes scheduled at this time, and the only active route is ST1011

I have it all figured out. I ended up reading another post, and Created a Route that’s down and back, down and back.