Incorrect column number returned in INDEX, MATCH for nth instance

Hit an absolute brick wall with what sounds like it should be so simple...

The source data contains the name, project and hours a person commits to that project.

Where there is no resource available, the name is 'unassigned' until a resource can be found. There could be multiple instances of this.

What I need to do is pull this information into another table. I have the (array) formula (

{=INDEX(tdata,SMALL(IF(tproject=$A16,ROW($A$4:$J$8)),ROW(1:1))-3,1}

) to identify and retrieve the nth instance of each name and duplicate and now need to look up each nth name instance, match it against a date and return the hours value.

I have the row number of each instance so would have expected to just use the MATCH function to determine the column from which to return the intersecting cell value Formula below), however I cannot get it to return the correct column

=INDEX(tdata,SMALL(IF(tproject=$A16,ROW($A$4:$J$8)),ROW(1:1))-3,MATCH(B14,tdate,0))

Attached is a simple cut of the data.

Where am I falling down?

Cheers