Countrows from Sumx

A Small screen shot of the data, its pretty simple pick up parcels from one location by State and ship it to another by State then its either Overnight or Off-Peak  (x days).

Count the week days between Pick up & Delivered date.

Delivery Days = if( not(isblank([Pick Up Date])) && not(isblank([Actual Delivered Date])),
COUNTROWS (
    FILTER (
        ADDCOLUMNS (
            CALENDAR ( 
                'Toll_Shipments'[Pick Up Date],
                Toll_Shipments[Actual Delivered Date]
                  ),
            "Is Weekday",WEEKDAY([date],2)<6
            ,"Is Holiday", CONTAINS('Holiday Dates','Holiday Dates'[Dates],[Date] )
        ),
        [Is Holiday] = FALSE() 
           && [Is Weekday] = TRUE()
    )
),BLANK())

Then if the delivery days are higher than the overnight max (SLA number) return red. This works great but now I need to count the number of rows which are red.

tas 1 format days =
var _delivered = SUMX(toll_shipments, Toll_Shipments[Delivery Days])
var _maxdays = SUMX(Delivery Times Ex Tasmania, Delivery Times Ex Tasmania[Overnight Max])

return
IF(_delivered > _maxdays,"Red","Black")

Attempt to count the red rows only, this has a error "True False expression does not specify one column. Each True/False expressions used a table filter expression must refer to exactly one column.

tas 1 count days = 
var _delivered = SUMX(Toll_Shipments,Toll_Shipments[Delivery Days])
var _maxdays = sumx('Delivery Times Ex Tasmania','Delivery Times Ex Tasmania'[Overnight Max])

return
IF(_delivered > _maxdays,Calculate(countrows(toll_shipments),filter(toll_shipments, Toll_Shipments[Sender State] = "TAS" && Toll_Shipments[Shipment Type] = "Overnight"),0))

 I've tried a few different combinations and haven't got it work yet.

Thanks for any assistance.