Look at the trip notes....

Appears the Capt is an LCA who will be giving IOE on the trip.

My guess is the Capt was assigned by the LCA scheduler when the trip was left "available" during th View/Add & Secondary Line process.

Additionally, the FO who just picked it up probably realized he wasn't going to have to fly it, once the IOE assignment appeared in the Trip Notes.

Of course, he isn't bumped until the IOE is confirmed --- 1 to 2 days prior.

Unfortunately, the FO "Pick Up" may still "count" in terms of the Disputed Pairing Process. --- and that hurts us all in many ways in the long run!