UL 2CC CA in 5G NSA

Hi, per spec is it possible to aggregate 2 5G carriers in UL?
I see one vendor only brought support for 5G SA handsets. Could you pls share your opinion and experience on that? I think UE needs 2 TX antenna for that but the question UL 2CC CA is possible on 5G NSA (Handset supports both 5G SA&NSA)
Thx