In the Receive-then-Print-while-RIP mode the ripping job is present at the top of the 'Scheduled jobs queue', printing for that job will start in parallel with ripping. Ripping in the Receive-then-Print-while-RIP mode will only start when the whole job is received. The bold parts in the figure below indicate the differences with the figure "Time line for job stage transitions" above.
Time line for job stage transitions for Print-while-rip model