How did the British and Canadian beachheads at Sword and Juno finally connect after D-Day?

The connection between the British forces at Sword Beach and the Canadian forces at Juno Beach was not achieved on D-Day due to heavy resistance and a German counterattack that created a gap between the two beachheads.12

The mission to establish this link was assigned to the 48th Royal Marine Commando, which landed at the easternmost sector of Juno Beach. Despite facing significant casualties from beach defenses and the threat of the 21st Panzer Division, the Allied forces held their positions. The successful connection between the two beachheads was finally accomplished on June 7, when the commandos pushed through the remaining German defenses at Luc-sur-Mer to link up with the British units at Sword.1