Extension of typealias of a generic type

Using Swift
1

Suppose I have a custom type Foo, and declare typealias Bar = [Foo], are the following 2 extension the same?

extension Bar: Comparable {
	public static func < (lhs: Self, rhs: Self) -> Bool {
		//	...
	}
}

extension Array where Element == Foo: Comparable {
	public static func < (lhs: Self, rhs: Self) -> Bool {
		//	...
	}
}

I found this old pitch that seems to indicate that the first extension shouldn't be possible yet. However, Xcode isn't complaining.