Ah brilliant! Did you buy a newborn insert separate?
No we didn't have to. The back seat reclines into a bassinet style.
I bought the Baby jogger City tour 2 double which seems quite narrow and fits into our doorway. I wanted something side by side. I have to say though that the bassinet looks very cosy.
I have the Baby Joy double stroller. Hopefully this link works BABY JOY Double Stroller https://a.co/d/bXK23bG