How with query to obtain blocking time shown in blocking for specific period ?

blocking details has perfect GUI 

sent it customer or analysing in excel  it is become problematic  

if you run copy paste you details of blocking truncated 

I tried to extract data using  query provided in link https://thwack.solarwinds.com/product-forums/database-performance-analyzer-dpa/f/forum/2838/custom-report---blocking-report

but I could never get same result of blocking duration 

bellow is same period  shown in GUI and by Query

DECLARE @start_time VARCHAR(16), @end_time VARCHAR(16), @DBNAME VARCHAR(100), @DBID VARCHAR(3), @SQL NVARCHAR(MAX)

SELECT @start_time = '20210420 10:30'

SELECT @end_time = '20210420 10:40'

SELECT @DBNAME = 'WIN-11112222'

SELECT @DBID = ID FROM ignite.COND WHERE NAME = @DBNAME

SET @SQL = 'SELECT x.BLOCKER AS [BLOCKER HASH], x.BLOCKED AS [BLOCKEE HASH], x.DURATION AS [DURATION (sec)], st.ST AS [BLOCKER SQL],
st2.ST as [BLOCKEE SQL] ' +

'FROM ' +

'(' +

'( ' +

'SELECT sw.IZHO AS [BLOCKER], sw2.IZHO AS [BLOCKED], ISNULL(SUM(sw2.QP)/100,0) AS [DURATION] ' +

'FROM ignite.CONSW_' + @DBID + ' sw ' +

'INNER JOIN ignite.CONSW_' + @DBID + ' sw2 ON sw.BLER = sw2.BLEE ' +

'WHERE sw.D BETWEEN ''' + @start_time + ''' AND ''' + @end_time + ''' ' +

'AND sw2.D BETWEEN ''' + @start_time + ''' AND ''' + @end_time + ''' ' +

'GROUP BY sw.IZHO, sw2.IZHO ' +

') ' +

'UNION ' +

'( ' +

'SELECT null [BLOCKER], sw2.IZHO AS [BLOCKED], ISNULL(SUM(sw2.QP)/100,0) AS [DURATION] ' +

'FROM ignite.CONSW_' + @DBID + ' sw2 ' +

'WHERE sw2.D BETWEEN ''' + @start_time + ''' AND ''' + @end_time + ''' ' +

'AND sw2.BLEE < 0 ' +

'GROUP BY sw2.IZHO ' +

') ' +

') x ' +

'LEFT JOIN ignite.CONST_' + @DBID + ' st ON x.BLOCKER = st.H AND st.P = 0 ' +

'LEFT JOIN ignite.CONST_' + @DBID + ' st2 ON x.BLOCKED = st2.H AND st2.P = 0 ' +

'order by x.DURATION desc '

EXEC (@SQL)

using profiler I can also capture query executed when I click on blocking details ,but again can 't obtain same duration as specified on form 

declare
@P0 datetime = '20210420 10:30',
@P1 datetime = '20210420 10:40'

select D,VDSI,XCUW,UDPW,PWMY,IZHO,HGOB,KEEQ,IXOY,DBML,RMAL,ORPH,CTFL,QP/100.0 WAITTIME,BLER,BLEE from ignite.CONSW_1
where D >= @P0 and D < @P1 and ((BLER is not null) or (BLEE is not null))
order by D

Customer want analyse details of  blocking on daily basis 

1. Is anyway extract data from blocking GUI to excel and show full text for each   Blocker SQL ,  blocked SQL  and duration and wait time  ?

2. How  extract correct duration from blocker and waiter  from   ignite. CONSW_   and /or other tables 

Thank you

Alex