After adding overhangs, there may be a gap between them. To correct this, the corners need to be filleted. When a corner is filleted, the two edges selected will automatically extend or trim to join them together.
Fillet Corners
Click Fillet > Sharp
Click the first edge.
Click the second edge. The two edges will now be connected.
Filleting with chamfers and radii are also available to use depending on the design.