=SUM(IF(MMULT(N(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))>=TRANSPOSE(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))),ISODD(MATCH(SMALL(1*SUBSTITUTE(MID(TEXTJOIN(",",,A2,B2),(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))*6-5,5),IF(ISEVEN(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),"00:00",""),"24:00"),ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),1*SUBSTITUTE(MID(TEXTJOIN(",",,A2,B2),(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))*6-5,5),IF(ISEVEN(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),"00:00",""),"24:00"),))*2-1)=1,IF(ISODD(MATCH(SMALL(1*SUBSTITUTE(MID(TEXTJOIN(",",,A2,B2),(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))*6-5,5),IF(ISEVEN(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),"00:00",""),"24:00"),ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),1*SUBSTITUTE(MID(TEXTJOIN(",",,A2,B2),(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))*6-5,5),IF(ISEVEN(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),"00:00",""),"24:00"),))*2-1=1,-1,),IF(MMULT(N(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))>=TRANSPOSE(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))),ISODD(MATCH(SMALL(1*SUBSTITUTE(MID(TEXTJOIN(",",,A2,B2),(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))*6-5,5),IF(ISEVEN(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),"00:00",""),"24:00"),ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),1*SUBSTITUTE(MID(TEXTJOIN(",",,A2,B2),(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))*6-5,5),IF(ISEVEN(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),"00:00",""),"24:00"),))*2-1)=0,1,))*SMALL(1*SUBSTITUTE(MID(TEXTJOIN(",",,A2,B2),(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2)))*6-5,5),IF(ISEVEN(ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))),"00:00",""),"24:00"),ROW(OFFSET(A1,,,(LEN(TEXTJOIN(",",,A2,B2))-LEN(SUBSTITUTE(TEXTJOIN(",",,A2,B2),",",))+1)*2))))*24
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