Yes, remember, the tfl is not a muscle, it’s a band, and the muscles that control it are up in the hip. Normally when people feel release in that area, it’s the Lateral head of the thigh. And boy, that can get super tight in runners!
issues normally always happen in clusters. Eg, if the outside hip is tight, the the outside thigh normally gets tight, and the outside calf normally gets tight. You may also have Lats tightness in your back? Depending on issues, the problem can easily swap sides from the upper hip and upwards, eg, right leg but left upper body.