OptionExtensions.cs

 public static class OptionExtensions
    {
        public static Option<(TOuterA, TOuterB, TInner)> Intersect<TOuterA, TOuterB, TInner>(this Option<(TOuterA, TOuterB)> outer, Option<TInner> inner)
        {
            return outer.HasValue && inner.HasValue
                ? outer.Select(outer1 => (outer1.Item1,outer1.Item2, inner.ValueOrFailure()))
                : Option.None<(TOuterA, TOuterB, TInner)>();
        }
        public static Option<(TOuter,TInner)> Intersect<TOuter, TInner>(this Option<TOuter> outer,Option<TInner> inner)
        {
            return outer.HasValue && inner.HasValue
                ? outer.Select(outer1 => (outer1, inner.ValueOrFailure()))
                : Option.None<(TOuter, TInner)>();
        }
    }