The shelf on both halves of this: CPAP Mask Leaks & Mouth Leak: Causes, the Data Threshold, and Fixes — the checklist above with the sourced detail. Mask Off & Large-Leak Events: Why Your CPAP Report Shows Gaps — what the large-leak and mask-off markers actually mean in your data. Nothing on SomniTalk is medical advice. Talk to your own clinician before changing therapy.