identify missed calls

Hi, Lodewyk 

Thanks your reply.

Please refer to the new DAX formula:

ReturnedStatus2 = 
SUMMARIZE (
    ADDCOLUMNS (
        FILTER (
            GENERATE (
                SELECTCOLUMNS (
                    FILTER ( 'Table1', CONTAINSSTRING ( 'Table1'[From], "miss caller" ) ),
                    "_To1", 'Table1'[To],
                    "_From1", 'Table1'[From],
                    "_result1", 'Table1'[Result],
                    "_Date1", 'Table1'[Date/Time]
                ),
                SELECTCOLUMNS (
                    FILTER ( 'Table1', CONTAINSSTRING ( 'Table1'[From], "receiver" ) ),
                    "_To2", 'Table1'[To],
                    "_From2", 'Table1'[From],
                    "_Date2", 'Table1'[Date/Time],
                    "_result2", 'Table1'[Result]
                )
            ),
            [_From1] = [_To2]
        ),
        "ReturnedWithin3Days",
            IF (
                DATEDIFF ( [_Date1], [_Date2], DAY ) <= 3
                    && [_result2] = "answered",
                "Returned",
                "No Returned"
            )
    ),
    [_From1],
    [ReturnedWithin3Days]
)

I have updated the new pbix file below, hope this helps.

I hope my suggestions give you good ideas, if you have any more questions, please clarify in a follow-up reply.
Best Regards,
Fen Ling,
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