Date: 202009
Local time of day: 0001-0600
Location: ZZZ.Airport, US
Aircraft: Commercial Fixed Wing
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Parked
Reporter organization: Air Carrier
Reporter function: Flight Attendant (On Duty)
Reporter qualification: Flight Attendant Current
Human factors: Distraction; Situational Awareness; Workload
Anomaly: Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Other / Unknown
Detector: Person Flight Attendant
When detected: Aircraft In Service At Gate
Result: General None Reported / Taken
Contributing factors: Company Policy; Human Factors
Primary problem: Company Policy

Narrative: I noticed inbound to ZZZ that for the outbound back to ZZZ1 we were scheduled to have a blind passenger. Inbound we had an aisle chair and 2 unaccompanied minors. Immediately upon arrival into ZZZ; the agent opened the door and walked away. We had no paperwork for the return flight and the time period after that was plagued with over tasks; issue laden; behind schedule and a myriad of other issues. Cabin cleaners literally swarmed the aircraft.  We had the inbound aisle passenger in first class that eventually needed to be taken off the aircraft and her family was up and about the cabin trying to retrieve her items while deplaning was commencing; one row at a time due to COVID procedures. The cabin cleaners were crowding me in the galley and one had entered the lav to clean. More were trying to get on the aircraft to clean while passengers were continuously deplaning due to the row by row deplaning. The cabin cleaners were so aggressive that the FO eventually halted them from entering the aircraft and would not let the one in the lav enter the cabin. The aisle chair assists were also in the aisle talking to the passengers (without the aisle chair) during deplaning. It was total chaos.After the passengers were all off; the assists came on to get the aisle chair passenger and I had 2 unaccompanied minors to take to the terminal. There were no assists to take the unaccompanied minors since they were terminating. I had to wait. When I got back from taking the unaccompanied minors out; the cleaners were finishing up. We were already running behind schedule and the agents were buying passengers off the flight. By this time; I had forgotten that I had looked ahead and noticed the blind passenger for the flight home. The blind passenger was not pre-boarded; which further contributed to my lack of remembrance. The pre-boarding of special assist passenger is the best cue and reminder for required briefings. This did not occur for this passenger on this flight. She boarded with regular boarding with her traveling companion.Boarding was further complicated by the over sales and the volunteers being seated at the last minute; one by one. The agents had to come onto the aircraft several times for seat counts. We had oversized baggage in the last row which needed to be checked also. I was trying to get the baggage up to the front to be checked while the agents were counting seats and the aisle was not clogged. I had called the FA in the back to send up the bags but he was dealing with seat dupes. I called a second time to get the bags up before the last few people were put on the aircraft. I finally had to make a PA for the passenger to bring the bags to the front of the aircraft. The agent was in the last row dealing with seat dupes; apparently the entire row was duped up.  I finally got the 2 bags up from the front. Previous to this I had to obtain; in advance for the agent; the final destination of the passenger bag. Another agent came on to do another seat count while the one was dealing with the seat dupes.  Four or 5 more passengers were boarded. Then there was another issue with whether or not a blocked seat near a FA jumpseat could be used. Needless to say; there was much over tasking and task overload by FAs AND agents.During taxi out I remembered and called all the other FAs to alert and tell them we needed to get the briefing done after we got in the air as we were getting ready to take off. Again; there were issues after takeoff; several call lights and other needs which caused me to forget again. It was about 45 minutes prior to landing that I remembered and asked the other FAs if any of them had briefed her as she was sitting in row 22 and I had alerted them right before takeoff. None of them had briefed her so I immediately went to brief her. I apologized. I asked if she traveled frequently and she said yes. She was traveling with another person. I apologized again and told her I should have already briefed her butshe did not pre-board and I had missed it. She said she did not pre-board as she must not have been in the gate area at the time. I briefed her and apologized again and mentioned the heavy task load which was no excuse.Honestly I don't know if this could have been prevented yesterday. It was the most chaotic day I've had at work in ages. One of the biggest distractions was the action of the cabin cleaners. Although I understand why the policy exists for them to enter the aircraft ASAP. I'm not joking when I say they literally swarmed the aircraft yesterday. There were so many other issues at play yesterday that it was a perfect storm. They were relentless until the FO stepped in and kept them from entering the aircraft. There was lot going on in first class with the aisle passenger and her family and the cleaners swarming the area and the galley made it worse. It was crazy. I pride myself of doing the best I can and accomplishing these required briefings in a timely and professional manner. I don't like that I missed this one; and that the accountability of the rest of my crew failed also. That's just how unreal and crazy yesterday was. In the end; the briefing was done.




Synopsis: Flight Attendant reported failing to conduct a required briefing after many distractions during deplaning/boarding including cleaners entering while passengers were deplaning.