At 21:00, Jellicoe, conscious of the Grand Fleet's deficiencies in night fighting, decided to try to avoid a major engagement until early dawn. He placed a screen of cruisers and destroyers behind his battle fleet to patrol the rear as he headed south to guard Scheer's expected escape route. In reality, Scheer opted to cross Jellicoe's wake and escape via Horns Reef. Luckily for Scheer, most of the light forces in Jellicoe's rearguard failed to report the seven separate encounters with the German fleet during the night; the very few radio reports that were sent to the British flagship were never received, possibly because the Germans were jamming British frequencies. Many of the destroyers failed to make the most of their opportunities to attack discovered ships, despite Jellicoe's expectations that the destroyer forces would, if necessary, be able to block the path of the German fleet.