There are few jobs: A, B and Others. A depends from B, i.e A job triggers B one, but no vice versa. A and B cannot be run simultaneously.
So, the problem is that the jobs lock each other: A waits while B will be finished, when B can't start, because A is started (is waiting for completion of B).
Is it possible to trigger B job BEFORE A job starts?
Up- and downstream features and found plugins can't solve the issue. Some other jobs can start B job too. Any of the jobs have not any artifact dependencies.
Any ideas?