Is it permissible to combine the Dhuhr and Asr prayers in a European country during two consecutive months in which the Dhuhr prayer time cannot be observed due to the shortness of the period?

The fundamental principle is the obligation to perform prayers within their prescribed times. Combining prayers is not permissible except for a valid excuse. If separating the prayers causes hardship and difficulty, then combining them is permissible due to need, as some scholars have held. One should strive to perform prayers within their proper times, but if this becomes difficult, it is hoped that there is an excuse and leniency in combining them.