What do the Audience tab's 'Channels that your audience watches' and 'What your audience watches' reports show, over what window, and what are their documented uses?

Problem: knowing what else your viewers watch. Source: YouTube Help 'Understand your YouTube audience' and 'Tips to learn what viewers are watching'. Source statements: the Audience tab shows monthly audience (unique viewers over the previous 28 days, recalculated daily) split into new, casual and regular viewers. 'Channels that your audience watches' shows other channels your viewers consistently watched outside your channel over the past 28 days, for interests and collaboration; 'What your audience watches' shows other videos, Shorts, live streams and podcasts watched outside your channel over the past seven days, for topics, titles, thumbnail ideas and collaborations; 'Formats your viewers watch' covers videos, Shorts and live in the last 28 days. Official Artist Channel owners do not see videos where they are the primary artist. The Tips page suggests looking for patterns, themes in titles and thumbnails, and collaboration opportunities. Limits stated: some data (geography, traffic sources, gender) may be limited in Analytics. Method (inference): use the seven-day report as a trend probe, not a stable profile (its window is shorter than the channel report's); keep a dated snapshot if you want to compare. Failure modes: copying titles or thumbnails of other creators' videos (see YouTube spam and reused-content policy in C3-B589-14/15); treating viewer overlap as causal. Limitations: no sample sizes or thresholds are given. Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Limitations: Descriptions only; no thresholds or sample sizes are documented. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

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      "note": "Audience reports; Audience reports; Audience reports; What content your viewers are watching"
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