Not Working : Sum of Hours

[anish.ms]

Hi,

Can somebody help me with the below-
I have time (hours) like below in a column and the cell format is [hh]:mm:ss

01:00:00

02:00:00

02:00:00

00:30:00

00:30:00

The above time is totaling to 6 hrs, but when I add it using sumif and format it to "HH:MM", I'm getting the below answer.
Total Hrs.png

Given below are the codes that I'm using

Sub UpdateTotalEntriesHours()
    Dim Arg1   As Range
    Dim Arg2   As Range
    Dim Arg3   As Range


    tl = Len(txtbx_review_date.Text)              'total length 
    dl = InStr(txtbx_review_date.Text, ":") + 1   'date start position Example Sun : May 02, 2021
    On Error Resume Next
    DateChk = Right(txtbx_review_date.Text, tl - dl)
    On Error GoTo 0
    
    Set Arg1 = DestnWS.Range("Table_DB[Member Name]")
    Set Arg2 = DestnWS.Range("Table_DB[Review Date]")
    Set Arg3 = DestnWS.Range("Table_DB[Review Time]")
    
    txtbx_total_entries.Value = Application.WorksheetFunction.CountIfs(Arg1, txtbx_name.Text, Arg2, DateChk)
    txtbx_total_hours.Value = Application.WorksheetFunction.SumIfs(Arg3, Arg1, txtbx_name.Text, Arg2, DateChk)
    txtbx_total_hours.Value = format(txtbx_total_hours.Value, "hh:mm")
End Sub