Forgive me but I don’t need to calculate timediff in this case. I need a way to handle the overlapping cases between the next row values of utc_date column and the previous row value of updated_at column. Probably I misunderstood your reply, can you be more specific?
Okay. I found by myself a work-around that in my opinion does the job in the right way.
I have calculated the timediff in seconds between utc_date and updated_at and th timediff in seconds for utc_date. Then I have applied the lag column node for the first timediff and then with rule-based row filter I have set the rule as below: