was there anything different about 20-21 season?
Yes, qualification criteria
Premier League
The top four teams in the Premier League qualify for the subsequent season's UEFA Champions League group stage. The winners of the UEFA Champions League and UEFA Europa League also qualify for the subsequent season's UEFA Champions League group stage. If this means six Premier League teams qualify, then the fourth-placed team in the Premier League instead plays in the UEFA Europa League, for any single nation is limited to a maximum of five teams.

The fifth-placed team in the Premier League, as well as the winner of the FA Cup, qualifies for the subsequent season's UEFA Europa League group stage, but if the winner also finished in the top five places in the Premier League or has won one of UEFA's major tournaments, then this place reverts to the team that finished sixth. The winner of the EFL Cup qualifies for the subsequent season's UEFA Europa League second qualifying round, but if the winner already qualified for a UEFA competition via their performance in another competition, then
which team has won the epl most times UNANSWERABLE which four teams dominated it in last millennium? Arsenal, Chelsea, Liverpool and Manchester United. did the same teams maintain their dominance in new millennium as well? Yes did any new teams also emerge as dominant ones? Yes, Tottenham Hotspur and Manchester City
wiki:7765199
Premier League [SEP] Qualification criteria for 2020–21
The top four teams in the Premier League qualify for the subsequent season's UEFA Champions League group stage. The winners of the UEFA Champions League and UEFA Europa League also qualify for the subsequent season's UEFA Champions League group stage. If this means six Premier League teams qualify, then the fourth-placed team in the Premier League instead plays in the UEFA Europa League, for any single nation is limited to a maximum of five teams. The fifth-placed team in the Premier League, as well as the winner of the FA Cup, qualifies for the subsequent season's UEFA Europa League group stage, but if the winner also finished in the top five places in the Premier League or has won one of UEFA's major tournaments, then this place reverts to the team that finished sixth.