Review of Brussels Airlines flight from Brussels to London in Economy

Overview
This is the second flight on my return trip from Italy back home to the Bay Area on Brussels Airlines from Brussels to London Heathrow, and all flights are listed below. While the last flight was uneventful, this one was the exact opposite, and not in a good way. However, it did cause something good, but that's to be discussed later. Here is a summary of my trip.
United 787-9 SFO-LHR: https://flight-report.com/en/report/29301/United-UA901-San-Francisco-SFO-London-LHR
Brussels A320 LHR-BRU: no review
Brussels A319 BRU-FCO: no review
Brussels A319 VCE-BRU: https://flight-report.com/en/report/29303/Brussels-Airlines-SN3208-Venice-VCE-Brussels-BRU
Brussels A320 BRU-LHR: you are here
British A380 LHR-SFO: https://flight-report.com/en/report/29305/British-Airways-BA287-London-LHR-San-Francisco-SFO

Brussels Airlines "The Suite"

After clearing security and passport control, we walked towards the Brussels Airlines Business class lounge on the B side of Brussels Airport, known as "The Suite". The lounge looked quite elegant, as there were even a bunch of Brussels A320 models, given how many special liveries Brussels Airlines has put on this aircraft.

The lounge is quite expansive, and there's no shortage of seating areas. There are seats everywhere and even TVs showing mostly news at the time. Since we had an early morning flight, the food being served at the time was breakfast. There were lots of food options, such as crossaints, salad, tomato, cucumber, bread, ham, yogurt, hummus, etc. I chose to take a salad with some ham and hummus and it tasted quite good.

The lounge has pretty good views of the tarmac, too, so you can do planespotting from here if you want.

Views of the tarmac, feat. UA950(B777-200ER, N221UA) from Washington IAD, a Thai A350-900
getting ready to return to Bangkok, and an Ethiopian 787 getting ready to return to Addis Abba.
After being in the lounge for about 35 min, we had to board our plane to London. Overall, I thought the lounge was pretty good, but it was nothing special.
While on the way to the gate, I looked at Flightradar24 and saw that our plane would be an A320 registered OO-SNF, leased by Brussels Airlines in August 2012, but originally delivered to Aer Lingus in June 2006. Boarding was quite easy with Star Alliance Gold. Once I boarded, I knew that the flight wouldn't be too much different than the last one, since the seats are the exact same. I have gone into more detail in my previous review, so read that for more detail on the seat.

However, since we were seated in row 12, that was an exit row. Boarding the plane took quite a long time, as many were late and the flight attendants had to do lots of reshuffling of passengers. Once boarding was done, my brother and I saw that row 11 ahead of us was open, so we asked if we could have that row, and they said yes. However, a few minutes later, a family of three came in quite late and were supposed to be seated in row 11. So the flight attendant had to split them up, and one of them was right bang in the middle of us. So that was awkward. Once the flight attendants closed the door, I thought that we would be ready to depart. However, after about 30 min, we still hadn't pushed back. I really wondered what could be taking so long. So I asked the nearest flight attendant, "howcome we haven't pushed back yet?" She just walked off. "That was rude", I thought. It would be another 25 min before we would finally push back and take off. The flight was about 40 min, and we landed in LHR about 25 min late. The flight itself was uneventful, as there were no meals and no sort of in-flight entertainment systems. However, this is livable with for a flight just under an hour.

View after takeoff from Brussels Airport

View of London during descent into LHR
What happened afterwards, was where it got real.