Make the expectation explicit
Wait until the deployment is available and confirm the test runner can access it. Use a scoped AuraCheck CI token to coordinate the run for the relevant cases.
Put it into practice
Make the pipeline wait for completion and handle expired previews explicitly. Keep production credentials out of preview workflows.
Try this on your next release
Choose one journey, define the expected result, and inspect the evidence from a completed run. Expand the suite after the first test is useful.