Certain tables of ACS 2015-2019 5-year are not available to the census block group level

Hello,

I wanted to download the census block group level data of table B08013: AGGREGATE TRAVEL TIME TO WORK (IN MINUTES) OF WORKERS BY SEX. According to 2019 ACS Detailed Table Shells: https://www2.census.gov/programs-surveys/acs/summary_file/2019/documentation/user_tools/ACS2019_Table_Shells.xlsx (You need to download it to see as preview only shows the first 5000 rows), the table should be available in both one-year and five-year estimates. I want the census block group level data, so I plan to use the five-year estimates. I tried both https://data.census.gov/cedsci/  and IPUMS NHGIS, but B08013: AGGREGATE TRAVEL TIME TO WORK (IN MINUTES) OF WORKERS BY SEX is only available at the census tract level in ACS 2015-2019 5-year estimates. I am really confused, as I thought  ACS 2015-2019 5-year estimates should have tables at the census block group level.

Any thoughts would be greatly appreciated. Thank you.