ATC watcher
I've heard 2nd hand that they had their radar on Auto and were avoiding what they saw on the radar. They said the hail area was not visible on the radar.
Good second hand !
They avoided weather along the SID , same weather avoidance on the way back after dumping .
Reading some Airbus documents on radar, 40 % of hail is outside the cumulonimbus , 60% inside. Dry hail has a "green reflectivity" looking as snow .
This can cure "jcjeant" " wish to read syndrome"