Thanks for the replies.

My question was in which option would my 2nd-diff restore finish faster? Or they would take the same amount of time to restore the 2nd-diff?

For example: My full back taken Sunday 10TB, Wed 1st diff 3TB, Friday 2nd diff 5TB. Saturday afternoon is the migration day. Just make things simpler, just leave TL out of the picture for now. My key point here is the time it would take to restore the 2nd diff. So which option would make my 2nd-diff restore complete faster in term of duration?

Thanks,