When you're travelling straight over a junction alongside a vehicle turning left, rather than behind, you may have right of way, but the vehicle may not appreciate this or be aware of you. You often don't have a choice about being in this situation as the vehicle can pull alongside just as you reach the junction. The usual thing to do is brake and swear a bit. It sounds like in this case the driver made his awareness and courtesy clear, everyone went on their way and, for just one moment, all was right with the world.
When you're travelling straight over a junction alongside a vehicle turning left, rather than behind, you may have right of way, but the vehicle may not appreciate this or be aware of you. You often don't have a choice about being in this situation as the vehicle can pull alongside just as you reach the junction. The usual thing to do is brake and swear a bit. It sounds like in this case the driver made his awareness and courtesy clear, everyone went on their way and, for just one moment, all was right with the world.