The Lennard Zinn book specifically says for the SRAM 1x setups to go big-big with 2x full links overlap with inner at both ends, then add your quicklink for a total of 2.5 links of overlap.
I've been really impressed by this book to be honest.
With respect to a definition of a link indeed it is confusing and used differently by different people. Zinn does have a drawing of what he means by 'a whole link' so at least there is no confusion for the reader.
The Lennard Zinn book specifically says for the SRAM 1x setups to go big-big with 2x full links overlap with inner at both ends, then add your quicklink for a total of 2.5 links of overlap.