Combining Simulation Software Slides

Hi there! I’m trying to record audio over an existing software simulation but having difficulty. Any advice on how to either combine multiple software simulation slides into one or creating an audio recording to play over multiple slides?

Tracking elapsed time on an exported project

I am looking for a way to track how long it takes a learner to complete a Captivate project once published to an outside site. Are there any existing Captivate features that would allow for this? If not, any suggestions?