Modify an IFERROR INDEX array function to LINK a cell to ROW reference

Good Day

We'd like to modify a function to improve efficiency of the workbook attached

Modify array function in B for ROW link such that the Vlookup in D & E is not necessary & therefore can delete columns A & B

current IFERROR(INDEX($I$1:$I$11161,LARGE(IF($H$1:$H$11161>=LARGE($H$1:$H$11161,1),ROW($H$1:$H$11161),""),ROW(A1))),"")
wanted IFERROR(INDEX($I$1:$I$11161,LARGE(IF($H$1:$H$11161>=LARGE($H$1:$H$11161,LINK(F4)),ROW($H$1:$H$11161),""),ROW(Value or calculation from cells F1-F4)))),"")

Current solution: Vlookup F in column A & report D & E
Column E= end
D = start
C = difference between start & finish

Thanks very much for your help, all comments appreciated

Paul