Historical clue formulations

• "Documentary Now!" cable channel, originally — 2022-10-13
• Movie co. with a presence at Sundance — 2022-07-12
• "Portlandia" airer — 2019-04-02
• Movie co. behind "Boyhood" and "Transamerica" — 2016-03-06
• Cable channel that airs "Portlandia" — 2015-12-31