DAX Measure to calculate grouped intervals?

[leodm]

Database sample:

ID	Data de início real	Squad
ID001	03/01/2022 00:00:00	Squad1
ID004	04/01/2022 00:00:00	Squad1
ID007	06/01/2022 12:00:00	Squad1
ID002	03/01/2022 14:00:00	Squad2
ID008	07/01/2022 23:00:00	Squad2
ID009	07/01/2022 23:00:00	Squad2
ID010	08/01/2022 03:21:06	Squad2
ID011	09/01/2022 05:00:00	Squad2
ID003	03/01/2022 22:30:00	Squad3
ID005	05/01/2022 23:00:00	Squad3
ID006	05/01/2022 23:00:00	Squad3

The DAX Measure must return the interval of the dates grouped by "Squad".
Must return zero on first Squad row & when there's no interval between two dates.

ID	Data de início real	Squad	Interval (Days)
ID001	03/01/2022 00:00:00	Squad1	0,00
ID004	04/01/2022 00:00:00	Squad1	1,00
ID007	06/01/2022 12:00:00	Squad1	2,50
ID002	03/01/2022 14:00:00	Squad2	0,00
ID008	07/01/2022 23:00:00	Squad2	4,38
ID009	07/01/2022 23:00:00	Squad2	0,00
ID010	08/01/2022 03:21:06	Squad2	0,18
ID011	09/01/2022 05:00:00	Squad2	1,07
ID003	03/01/2022 22:30:00	Squad3	0,00
ID005	05/01/2022 23:00:00	Squad3	2,02
ID006	05/01/2022 23:00:00	Squad3	0,00

I appreciate so much you help.

[wdx223_Daniel · Accepted solution]

Interval(Days) =
VAR _pre =
    CALCULATE (
        MAX ( 'TestTable'[Data de início real] ),
        OFFSET (
            -1,
            ALLSELECTED (
                'TestTable'[Data de início real],
                TestTable[Squad],
                TestTable[ID]
            ),
            ORDERBY ( 'TestTable'[Data de início real] ),
            ,
            PARTITIONBY ( 'TestTable'[Squad] )
        )
    )
RETURN
    IF ( _pre, VALUE ( MAX ( 'TestTable'[Data de início real] ) - _pre ), 0 )