The 2 weeks clause is easy - it'll be "x < -14d", where x is the field you want to measure it against. (Updated?).
You haven't defined what "survey" means here though, so we can't tell you anything for that. If it's a custom field then it'll be something like "survey = no" or "survey is empty", but that's just a guess that it's a custom field. Could you explain what "survey" really is on your system?
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