I enjoyed the back and forth. Can I try an experiment to see if I understand this?

I fire photon A toward anywhere, then a second later I fire photon B in the same direction. Over time, the time-interval between A and B actually is greater than one second, because the "space" between them is growing? That is, if A stopped, it would actually take more than a second for B to hit it. Relative to me, A is still travelling at the speed of light and so is B, neither is travelling faster than c.