Either I explained really badly or you totally misunderstood, since I never have a phase entirely dedicated to aero cap. I think I was talking about my ideal 6 month plan, where I would have a long base phase where I do strength and ancap, then aerocap gets added in about half way through that. At this point I'd be doing stength/ancap work 5 days per week (i.e. every climbing/training day) ideally, it's just that I'm aerocapping too. The reason not to put the aerocap in the first 2 months of base instead of the 2nd 2 is that there's no point building up all the aero cap then just letting go of it way before you get around to using it. If the base is only 2 months then I'd usually add aerocap in right from the start, which is probably why I'm weak.
I've had a look at research on concurrent strength and endurance training in the past, but the studies I found were all designed in shit ways and had inconclusive and often contradictory results anyway. If there was a consensus I could find in training literature online it was that the further apart on the intensity/difficulty spectrum the components are the less likely they are to interfere with each other. Unfortunately that doesn't always fit well with other principles and timings, so you're always going to be making compromises. Anyway, if your enduro work makes you tired then your strength work is likely to be less effective. The more tired you get the greater the effect. Whether this is worth it depends on your priorities for long-term gains vs doing well this trip, what routes you'll be trying, what your underlying strengths and weaknesses are etc etc...
