The Journal of Mixed Methods Research no longer accepts articles that use the term "triangulation" to describe their methods, because it has too many meanings.

I am sorry for the delay -- I wrote a reply earlier but apparently ResearchGate 'lost" it. I wrote a response to the original Fetters and Molina JMMR editorial, "Commentary—After Triangulation, What Next?" which is available for download here.

With regard to synergy, I am not a great believer in this metaphor, but you might take a look at another JMMR editorial. this time by Fetters and Freshwaters, "The 1 + 1 =2 3 Integration Challenge."

Thanks, Dr. David.