A route may look continuous while its reference current must take a long detour. Plane boundaries and changes of reference deserve explicit review.
What to examine in the layout brief
Trace the outgoing signal and its nearby return structure together. At a via transition, identify the old and new reference planes and the intended connection between them. Avoid assuming that a visually nearby copper shape is electrically the correct reference.
What belongs in the release record
Annotate the return-path decisions in the board review. The appropriate connection depends on the reference system and interface; do not apply one stitching rule to every transition.
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