The following leads to a broken installation:

• Install Serverless operator 1.4.0
• Install knative-camel-operator
• (knative-camel-operator requires knativeserving.serving.knative.dev , which serverless 1.4.0 no longer provides, so community serving 0.7.1 gets installed automatically
• serving 0.7.1 operator creates KnativeServing automatically, which now takes over knative-serving namespace, preventing knative serving from the Serverless operator 1.4.0 to be properly installed