It possible to create relation between 2 CI in same level.
Please see screenshot in attachment.
Thanks & Regards,
Not really understand what do you mean?
you can create any type of relationship. the relation type itself is determining the level of the relation.
To have same level you just need to select a relation type that have the "is Peer to Peer" relation flagged on
Hope this help already
below an example of this type of relation type:
Retrieving data ...