Why Beatty failed to report contact clearly

Did Beatty delay reporting contact because he wanted the glory of Jutland, or was it a command-and-staff failure?

It was primarily a command-and-staff failure: Beatty concentrated on the battle, and nobody on his staff ensured that Jellicoe received timely, detailed reports.

A deliberate concealment theory is unnecessary. Beatty focused on the immediate battle and did not stop to provide Jellicoe with the detailed position and tactical picture he needed. The deeper failure was institutional because no staff officer forcefully reminded the commander that routine reports were required. Some signals reached Jellicoe, but they lacked the precise position and enemy information needed to direct the Grand Fleet. A competent staff matters when the commander is absorbed by combat.