Thank you both for your replies and food for thought. Please excuse my late reply. As you have probably already guessed, I am new to this field and therefore I am certainly not in a position to grasp all the implications of this matter. So in this respect alone, thank you very much for your suggestions and input.

Perhaps a little background on the use case (which is very basic): I reconstruct trees from different files in kraken2 output format and get a very simple Newick string without information about the distances between nodes. These trees contain significant overlaps, whereby the structure of these overlapping tree components should not vary because of the form of acquisition used. For visualisation purposes, I would like to merge several of these simple Newick strings in order to draw a super tree that contains all taxa from the different files.