Here, I'll help you out.
He's right; it's never going to happen in a 4 dimensional space-time manifold. Or perhaps more accurately; attempting to use mass (photon, electron, what have you) bound within the confines of said manifold to somehow trick its own existence... you see how one gets out into the weeds there?
You have to think bigger. If these dimensions don't allow something, then you'll have to go around them; under, over, bypass somehow.
How to get outside this manifold we seem to be bound to? Well, it will be tricky. How would you even know, if you somehow pulled it off? In any case, it might start with a singularity. Punch right out of these 4 dimensions. It happens in nature at the center of supermassive black holes. We see hints of dimensional permeability in virtual particles that arise out of nowhere and instantly annihilate themselves. We theorize about it as stings.
However, conservation of mass will always be obeyed, even outside of relativity and quantum mechanics. Call it a faith in science that still allows for change. The mass that you are able to put into a singularity goes somewhere, and it will not be bound by any speed of light or anything like that. Things like location and velocity are irrelevant here.
Now I'm not saying you could drive into it. But what if you built this singularity machine, and turned it on, and then built another, and turned that on, and then grazed it with an electron beam aimed at a loudspeaker. You might be able to hear background noise the singularity is picking up from beyond our 4 dimensions. I bet the Milky Ways' center is pretty loud. There is still probably some distance factor, but that factor is galactic. And remember, you really can't aim this device. But you might be able to hear Morse code tapped into the first one, while listening to galactic background noise on the second one...
Hey, you wanted to solve the problem. I'm just trying to give you a bit of an idea what you're in for. At least I didn't tell you that it can't be done. :)