The are definitely both GBR.
I think they might be two females, although I'm not 100%. The trick is to look at the back point of the dorsal and anal fins; in males they're pointed and reach out past the start of the tail, while in females they're rounded and stop where the tail starts.
Finnage is much more reliable than colouration, as rams can be so variable in colour due to dominance, decor, breeding etc.