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AD8476 Output voltage connection to LTC1968; is that possible?

I am currently using LTC1968 to output DC RMS value from a sine wave signal input, and I plan on using a differential amplifier. I want to know if I can connect the output of the AD8476 to the input of LTC1968.  Is it possible?

Below is an diagram of what I am thinking.

I hope to hear your response.