Combine two relationship from same point

Yes, of course. Where does your data come from? If you load e.g. all nodes first from a csv and then want to load the relationships, you can "match" for node p and node b, and then for node p and node c and create your relationships and then you will only have one node "p". However, without knowing where this all comes from, it is difficult to advise. Maybe this entry might also help you if you only have one file for nodes and relationships: How to create a relation from two columns in one table? - #4 by elena.kohlwey