Prof. Hertel worked for Heinkel designing the He-177. He then switsched to Junkers, helping to design the Ju-288A. So probably there was cross company idea transfer. However, the He-219 bears no architectural lineage to the He-119 or He-111. Its closest to Ju-288A and in the 1941 timeframe appears to follow the same cockpit changes due to RLM changes of the crew specifications which also affected the Ju-288A.