Nicktoons Halloween Adventures Commercials (WABC-TV) (October 27, 1996)
© Paramount
Nope, your eyes aren't deceiving you. Nickelodeon truly did syndicate their Nicktoons on other networks (ABC, WB, or UPN depending on your local TV station) in the mid-1990s. Feels like one of those "totally real and rare" videos except it's actually totally real and rare, doesn't it?
Taken during Halloween specials of Doug, Rugrats, Aaahh!! Real Monsters, & Rocko's Modern Life.