Word of advice for potential applicants: calibrate your expectations or to not have any. The whole interview process for me took close to 6 months, with long intervals in between feedback, and I had to frequently chase the HR for comments or arrangements for the next round.
I went through the full process of 5 rounds, the first being a HR screener Skype session, followed by an interview with your direct superior. Next came a full day session where I had to meet different people who assessed me on various aspects, such as a culture interview, a session on growth hacking concepts and theory, and a presentation on a pre-determined topic that they'll inform only a few days prior. Next came a test where I had to review some data/stats and come up with some PR angles. The final interview was a face-to-face with a senior company personnel who again assessed me on culture fit, and asked a standard, albeit somewhat challenging, set of questions (she was reading off a piece of paper) to test my responses.
After ALL that, the HR scheduled a call to tell me that while everyone who met me loved me and were "impressed with my market knowledge, digital periphery, etc", they weren't sure if I had the necessary analytical attributes required for this job and that they "weren't even sure if they could ever find such a person". This just left a sour taste in my mouth, and I felt that they totally disrespected my time and the effort I put in throughout the 6 months, including researching and preparing a presentation for that full-day session. The "analytical attributes" per se were not even listed in the job description, nor was I asked/tested about it in any of the rounds that I went through. While the HR was sympathetic and somewhat apologetic in speaking with me, I had a feeling that they were not sure what they want out of a candidate, and came up with a legitimate "excuse" to not move forward with my application, considering the fact that I had cleared all the rounds - moreover the recent news about Skyscanner being acquired by a Chinese conglomerate could've further exacerbated the situation, and created some uncertainty internally, which could've led to this lack of urgency in hiring new candidates.
Overall, while I enjoyed each step of the interview process, and I had fun discussing concepts and ideas with the interviewers, the entire process just felt like I'd wasted 6 months of my time with no tangible outcomes to show for it.