Neo4j Creating relationship between nodes that already map to a relationship

Question

Currently, I have a query in Neo4j that returns all the nodes in my graph that are pointed to by multiple nodes.

The query to return these nodes (in picture) looks like this:

MATCH (n)-[r:CLINICAL_SIGNIFICANCE]->()
WITH n, count(r) as rel_cnt
WHERE rel_cnt > 1
MATCH (c)-[r:PROTEIN_CHANGE]->(n)
return c, n

Is there a way to loop through the nodes labeled as c (blue nodes) and if they point to the same node labeled as n (yellow nodes), create a relationship between the nodes labeled as c (blue nodes)?