Suppose two jobs are created, both of which are configured to be triggered by Gerrit Trigger.

 

These jobs are called "job1" and "job2". The second job depends on the first job, via the Gerrit Trigger -> Advanced -> Other jobs on which this job depends option. The second job also has Gerrit Trigger -> Silent Mode enabled.

 

In this case, once the first job is complete, the second job will be permanently stuck in the "Waiting for all projects to finish gerrit-triggering to make sure no dependencies need to build first" state.

 

Disabling the "Silent Mode" option on the second job fixes this issue, so there is a connection.