As I read it when taking my female goats to male, 6 day standstill applies on return home unless there is isolation Unit, somewhere along the line I presume the 6 days will be involved.
Can't you arrange it so you can both cope with the standstill at the same time? It'.s less than a week?
If the paperwork shows they are both in transit at the same time, different vehicles, i can't see a problem?
I was told there is something about using hard standing, away from other stock, but how would you prove that if questioned?