That's a great point, but it doesn't really apply to the reality of the situation. If you bailout from a CO2 hit and need to finish decompression, you can be assured you won't be relying on your skills alone; you'll be relying on the skills and probably every drop of gas your entire dive team brought on the dive. The question she posed at first glance sounds astute and philosophical, but in truth it's the type of question posed by someone who has not really not wrapped their head all the way around the role and consequences physiology plays in a CCR dive. Based on video evidence, a "few" credible things I've studied, and speaking to a CO2 hit survivor and someone who has rescued a CO2 hit victim two miles back in a cave - I believe a CCR diver is very unlikely to live through a CO2 hit at depth/time requiring decompression without external assistance (i.e. autonomously). The bottom line is you're very likely to run out of breathing gas.