HIV and TB are linked anyway, irrespective of the resistance pattern behind it, because HIV suppresses your immune system. That's exactly the environment where TB thrives, so a suppressed immune system significantly increases the risk of TB. About one-third of the world's population has a latent form of TB in their body. Your normal immune system will allow you to fight that latency and possibly never have it come up. When you get HIV and your immune system goes down, the bug becomes active and you get TB.
Obviously, when you then have multidrug-resistant TB or extensively drug-resistant TB, you're fighting it harder. In cases like in Africa where there's a very large undetected pool of people living with HIV—because they are not diagnosed for HIV—because they're not put on antiretrovirals, their immune system goes down and therefore you will see that there are a lot more patients with TB. The combination of HIV and TB care needs to be very closely aligned.