A. Use Case Comments and paste the URL of the first Case opened for the client in each new Case related to them.

B. Create a custom field for an ID number and assign the same number to all cases that need to be connected

C. Create a custom object that connects Cases to each other with two Case lookup fields and add a check box field to designate the parent Case.

D. Use Case Hierarchy to connect all Cases for the client to a parent case and click on View Hierarcht to see the connected Cases