Assalamu alaykum When I’m traveling I pray in a mosque that combines Maghrib and Ishaa.(In times where Ishaa and Fajr are close). Is it permissible for me to pray with them together? Even if I might not have a need for it?

Ustadh AbdulAziz al-Haqqan
As a traveller thr sunnah is qasr, and u pray each salah at its time, unless there is a need or in the journey itself.