"Nearly" does heavy lifting here.
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Because bacteria would need to implement defenses to both attacks simultaneously, the researchers calculated that drug resistance is nearly impossible.
I'm no expert by any means, but I do know that several genetic failsafes have to be overcome simultaneously for you to develop cancer, so I don't see why it would be nearly impossible for bacteria to overcome only two things at once.
I guess somebody decided "makes antibiotic resistance a lot less likely" was too unweildy for the headline.
Tuberculosis is treated by a combination of drugs for the same reason and yet the bacteria still develops resistance.
Nearly does a lot of work in that headline.
So like...is this new breakthrough just taking two different antibiotics for the same disease? Am I missing something?