It did not matter how they got there, just as long as they did.
Thomas Tuchel certainly won’t care because Chelsea are now into the semi finals and a step closer to achieving his lofty targets.
Chelsea lost on the night after Porto substitute Mehdi Taremi scored a spectacular overhead kick deep into injury time but the reality was that Tuchel’s men never looked remotely in danger.
It was too little too late for Porto after a professional, solid and efficient Chelsea performance which just underlines what an impressive job Tuchel has done in the last three months.
Chelsea look hard to beat, they are resilient and have a seasoned European campaigner in charge which must mean that in this crazy, unprecedented season even the Champions League is within their grasp.
Blues boss Tuchel said “now is the time” for Chelsea to win trophies and you would not bet against them in the Champions League.
They will face either Real Madrid or Liverpool in the last four, the competition is opening up and suddenly Chelsea will feel they can reach the final in Istanbul on May 29.
Chelsea won it 2012 when the club was in a mess, Roberto Di Matteo was caretaker boss and it was far from being a vintage season. They are definitely in better shape now.
And they pulled off a shock back then and you would not bet against them doing it again this time.
It was scrappy, not very entertaining and anyone not supporting Chelsea would have surely turned over to watch the other quarter final between Paris Saint Germain and Bayern Munich.
That served up the action and drama missing from Chelsea’s game – and yet that is exactly the way Tuchel would have liked it. The last thing Tuchel wanted was to offer Porto a way back into the tie.
Chelsea won the first leg 2-0 thanks to goals from Mason Mount and Ben Chilwell and Porto never looked as if they truly believed they could turn it round in the second leg.
Tuchel even stood on the pitch at half time, applauding his players off because they had strangled the life out of the game.
Chelsea got better going forward as the game wore on, the wing backs pushed forward and it was Ben Chilwell who provided a lovely cut back but Christian Pulisic skewed his shot wide. Mount saw another effort on the break charged down.
Finally, Porto showed signs of life as substitute Taremi saw a header well saved by Mendy after 65 minutes. Incredibly, that was their first effort on target.
Porto boss Sérgio Conceição was booked on the touchline in the second half as maybe frustrations got the better of him.
Then deep into injury time with the clock ticking down, Porto substitute Nanu put over a cross and Taremi launched himself at a spectacular overhead kick which flew into the net.
Porto then suddenly went for it straight from the kick off – and you wonder why they did not try sooner. But they had simply ran out of time. There were angry exchanges at the final whistle as maybe Porto lost their tempers but they have only got themselves to blame.
Ultimately, Chelsea were able to cruise into their first Champions League semi final in seven years. Back then, they lost to Atletico Madrid and now they must feel, under Tuchel, it will be possible to go at least one step further.