You can create relationships for overlapping objects regardless of whether the objects overlap partially or fully.
1. Place an object on another object. The Relationship dialog box opens.
2. In the Connection Occurrence column, enable the check box for the relationship you want to create. The check boxes of relationships that already exist are already enabled.
3. Click OK.
The selected relationship between the two objects is created and the corresponding feature is available to you.
If you drag an object from an object to which it has implicit connections into the free modeling area, the relationships between them are represented as connections.