The inquest also heard Dylan waited an hour longer than he should have to be triaged at the hospital and was eventually seen by a nurse practitioner who said it was not unusual to see patients without their GP notes.
A consultant paediatrician at Aneurin Bevan health board, Dr Nakul Gupta, said clinicians should be reading GP letters.
Dylan was then seen by an “unidentified” clinician who did not introduce himself and “dismissed any concern with Dylan’s appendix”.
The health board has been asked to identify this person, with Dylan’s parents offering to help find the male clinician.
Corinne Cope said the health board have not taken them up on the offer.
She added: “How can the health board claim to have learned lessons from something so catastrophic when they can’t even identify who saw this, all we want is his reasoning, his thinking, what was he doing seeing Dylan?”