Is it permissible for a traveler to shorten and combine the Dhuhr and Asr prayers alone, then complete the Maghrib and Isha prayers with the congregation on the same day?

It is permissible for a traveler to combine the Dhuhr and Asr prayers, and the Maghrib and Isha prayers, either by advancing them (taqdim) or delaying them (ta'khir), along with shortening the four-rak'ah prayers, provided that the travel distance is approximately 83 kilometers. If the traveler prays alone or with a group of travelers, they may combine and shorten the prayers. However, if the traveler prays behind a resident Imam, they must complete the prayers and not shorten them, in order to follow the Imam.