The conformance suite should have a file with a Delayed Random Access Point (and the corresponding Key Frame Dependent Recovery Point, to exercise ISOBMFF's concept of SAP Type 3 and to exercise the corresponding AV1 ISOBMFF Sample Group https://aomediacodec.github.io/av1-isobmff/#forwardkeyframesamplegroupentry
The conformance suite should have a file with a Delayed Random Access Point (and the corresponding Key Frame Dependent Recovery Point, to exercise ISOBMFF's concept of SAP Type 3 and to exercise the corresponding AV1 ISOBMFF Sample Group https://aomediacodec.github.io/av1-isobmff/#forwardkeyframesamplegroupentry