They have scored 261 goals between them, made 13 trips to a total of eight different countries and been involved in six penalty shootouts.
Now Chelsea and Liverpool are preparing to meet in the FA Cup final towards the end of what has been an exhausting season for both clubs.
After Liverpool defeated Chelsea 11-10 on penalties in the Carabao Cup final in February, it is the first time the same teams have met in the League Cup and FA Cup final in the same season since Arsenal and Sheffield Wednesday in 1993.
The Gunners lifted both trophies that year, winning 2-1 in the League Cup final and 2-1 after extra time in an FA Cup final replay.
The meeting of Chelsea and Liverpool at Wembley for the second time in 76 days is an illustration of how deep both clubs have gone in the cup competitions.
Liverpool’s progression to the Champions League final means they will have played every possible fixture possible this season.
Chelsea were knocked out of the Champions League by Real Madrid at the quarter-final stage but have played in the Uefa Super Cup and Fifa Club World Cup, winning both competitions.
As Chelsea and Liverpool prepare to meet for the fourth time this season, BBC Sport crunches the numbers behind their marathon campaigns.
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With about two weeks of their season left, a historic quadruple is still a possibility for Liverpool.
They face Real in the Champions League final in Paris on 28 May, while they trail Premier League leaders Manchester City by three points with two matches remaining.
Jurgen Klopp’s side will play their 60th game of the season on Saturday, while the meeting with Real to decide the new champions of Europe will be their 63rd and final match.
It is their highest tally since 2015-16, when they finished runners-up in the Europa League and League Cup in Klopp’s first season in charge.
They have lost only three times this season – at West Ham and Leicester in the Premier League, and to Inter Milan at home in the Champions League.
