Only England-India series and Australia-England series are 5 match series. Rest all are mostly 2-4 match series.
Ind vs Eng also 5 test Series but yes Very Odd way ICC calculated points ind vs eng or ashes each win =24 points while 2 test series each win = 60 points
This mos> November 2021,SL vs WI will play 2 test on Galle where Lanka will Drill their Fa**y with wins>> 120 points easily.
I heard from Now on, ICC change rules on
Winning % than Actual points which desides number 1 or number 2 team
For example if india win more matches by next Year than australia, ( India still remains 2nd in Table 'cause of less % than side winning less but better %)
You may sorts out more in ICC sites
Icc still not Qualify Afg/Ire & zimbabwe ( Suspended for a while for 365 days) for Test Championship yet so there is no point to Discuss.
All those 3 country should play 4 day matches in side their country or sends their A team to other country so they gets use to for 4 or 5 day cricket.
India beat Afghanistan in one of test in 4 hours by an innings
Lunch & tea took 10 wkts
After tea & Close of 2nd day 10 more wkts
Since than they not much change they keep playing T20i more >> their captain Retired 72 hours ago who won 42 out of 52 Int'L (t20I) for Afghanistan @ world record.
India Gifted them A Ground in Noida, New Delhi but they never use it for 4 day Intra xl matches there.
Zimbabwe & Ireland Domestic cricket too way poor to scheduling matches.
If i have to run ICC i can Dis-qualify Bangladesh for all int'L who beats everyone in their own backyard but not play more than 2 series ( 1 before ICC gave them warning) in entire year