The FCC just announced that:
“As a result of the fluid and challenging nature of covering the outbreak of respiratory illness caused by a novel coronavirus (COVID-19), we understand that broadcast stations may be engaging in the sharing of news and news gathering resources in order to cover the emergency news event. These agreements may be impromptu oral agreements of a temporary nature. We take the opportunity to clarify that any such temporary, shared news gathering efforts that occur over the duration of this emergency news event and that are a related to news coverage of the COVID-19 pandemic need not be reduced to writing and placed in the stations’ online public inspection file.”
You can read the full announcement here: https://docs.fcc.gov/public/attachments/DA-20-303A1.pdf