Combining a "lived cued" and a recorded Keynote presentation

a live-cued Keynote with a recorded-cue Keynote

If you are talking about a Normal Presentation (Inspector > Document > Document > Presentation Type: Normal)

pressing the space bar to advance, and a recorded presentation (Play > Record Slideshow) which will advance automatically, then a new combined slideshow can't be a recorded and normal at the same time, its either one or the other.

Therefor you will need to merge the slides then re-record as follows:

• add the slides from the recorded slide show to the normal presentation - select all the slides in the Navigator (command A)
• drag and drop the slides from Recorded to Normal presentation Navigator
• clear the recording - Play > Clear Recording
• re-arange the slides as will be now required in the combined presentation by drag and drop in the Navigator
• record the slideshow from slide 1 with the new timings