MarkT: Usually efficiency is greater when input and output voltages are close to each other, so daisy-chaining is likely to mean each converter is being more efficient than with independent converters, but that won't translate to overall efficiency unless the lower voltages are using much less power that the higher voltages.
In our non-native schools, we were asked to sit for English Language punctuation tests. If the quoted sentence would be my test, I would do the following. My query is: Should the punctuation test be different for natives and non-natives?
Usually efficiency is greater when input and output voltages are close to each other; so, daisy-chaining is likely to mean each converter is being more efficient than with independent converters; but, that won't translate to overall efficiency unless the lower voltages are using much less power that the higher voltages.
(I have applied the rules of independent clause and the transitional adverb.)