Originally Posted by
maxc_20
It is possible atm to transit HND/NRT without any test requirements, as long as you don't stay overnight for NRT. however, this information is based on connecting with the same tickets, looking at the current state I suggest against booking separate tickets with connection, better book one single ticket for all your journey for simplicity and peace of mind.
I don't think that is correct, unless they have changed the rule from last year.
You cannot transit between NRT and HND as it involves entering Japan.
After rereading your post, I now think that you mean transit at NRT or transit at HND, but not between NRT and HND.