Do stuck replication slots prevent autovacuum of running entirely?

[Marcelo Fernandes]

Hi there,

I am trying to understand if a stuck replication slot would be sufficient to
stop an autovacuum of even starting.

Couldn't the autovacuum process start, but fail to remove dead tuples that
are still necessary by the replication slot? Why would it prevent autovacuum
of even starting instead?

Thanks.