"tôt or tard" meaning sooner or later??

"tôt or tard" meaning sooner or later??

In the boxed example above it says: Il s'apercevra de son erreur tôt "or" tard (and that is what the pronunciation sounds like to me as well), but I think that should read "tôt ou tard". So probably (as Steven says below) it is just a typo that needs fixing. Maybe "vous vous appercevrez de votre erreur tôt ou tard"? (smiley face)