Dremio cannot connect to MongoDB Kubernetes chart due to ReplicaSet setting


I am trying to connect Dremio to a MongoDB chart in Kubernetes. The chart has an external service and ingress. The Dremio connects, it fetches the cluster information, but it cannot connect (obviously) to the reported internal DNS names. I suppose the issue is, that the Java mongo connector has always a ReplicaSet flag in the connection string and it does not attempt a direct connection. Is there a parameter to force the direct connection? Via direct connection it should work. I have validated it with Robo 3T. With a direct connection it works, when a Replicaset connection is attempted, it reads the cluster information and the connection fails.
Is there any other solution to connect to a Kubernetes chart?

Many thanks in advance for your answer,

Kind Regards,