It's important to remember that being gifted and having dyslexia are not mutually exclusive. I have a number of clients that are gifted (from an IQ perspective) and also have speech and language issues and dyslexia. Unfortunately, intellectual horsepower cannot compensate for a weak phonological and orthographic profile. Horsepower is helpful in learning the strategies to read and compensate.

And yes - of course speech problems do not always lead to literacy problems - but there is a connection and thus one red flag to keep an eye on.