There were emotional scenes pre-match as Millwall remembered former manager Kenny Jackett, who died in June, with a minute’s applause before kick-off.
The Lions started strongest – and never really looked back after Arconte opened the scoring. Indeed, their lead should have been greater at the break but for Cordoba hacking Kyrell Lisbie’s effort off the line just before half-time.
Millwall’s attacking adventurousness was on full display despite the absence of winger Femi Azeez, who has been linked with a move away before the transfer window shuts on 1 September.
Norwich’s Panama international Cordoba, who played against England at this summer’s World Cup, first saw yellow for hauling down Coburn. When he later dragged down Arconte, referee Sam Allison had little choice but to dismiss him.
After Cordoba saw red, Neil’s side controlled what remained of the game before Cundle’s third – after he was picked out by Camiel Neghli – added an exclamation mark to the result.
For Philippe Clement’s Norwich, tipped to fight for promotion in 2026-27, this was a wake-up call.
While their opening defeat by West Bromwich Albion came tied to controversy, there could be no complaints at The Den as the Canaries limped away from south-east London still yet to claim a point this season.