3DA: T: Using Multicut & Target Weld (L12)

To extrude faces.

To insert an edge loop.

To create a new object.

To delete selected edges.

Left-click on the desired area.

Hold Shift and left-click.

Hold Ctrl and middle-mouse click.

Right-click and select "Insert Middle".

Delete all faces of both objects.

Combine the two objects into a single mesh.

Extrude the edges of both objects.

Apply a smooth modifier to both objects.

Select both edges and press the 'W' key.

Click on one edge and drag it to the target edge.

Double-click on both edges simultaneously.

Use the 'Bridge' tool instead.