When a man dressed for business wears two patterns above the waist, one of them should be discreet. Hardly a pattern at all, in other words. The check in Cary Grant's suit in the photo is complemented by his necktie, a pattern so subtle it may be a texture. Suit and tie each have interest but neither stops the eye from moving to his face.
This advice is but an extension of the technique that a man uses to wear pattern without letting the pattern wear him. It used to be said that the advanced dresser's skill at putting things together was best judged by how he looked in a suit with a bold weave, which entails surrounding the boldness with solids and semi-solids that reduce its obtrusiveness by blending and extending it (see Wearing Strong Patterns for an illustration). The objective once again is to keep the eye of the observer from lingering on the clothing.
Now it is certainly common for men to wear, for example, pin-striped suits and regimental striped neckties. Nothing wrong with that either, but it is a combination that works best when the pin-stripe is subtle. Too much concentrated boldness draws attention to the wearer's chest and holds it there, even when the patterns are (correctly) of different proportions.
Go quietly into the day.