For me the main difference with direct and indirect marketing is just the way a brand is going to target their clients. For example, if you're selling beauty product and you want to use direct marketing, you're going to do your advertising in a beauty magazine in order to touch the right people. In the other hand, if you just want to expend your message to a lot a different people, you're might gonna use television, radio or social media.
I answered the question with enthusiasm and a convincing dialectic linking my research experience with the job. The job was not as advertised. I looked at reviews online and even if I was invited to the next stage the exact following day I did not go because they were looking for people to stand around in the streets of London for 8 hours regardless of the weather and harass people nearby to give money to the companies represented. Extremely unprofessional and a waste of a degree, bad advertisement. Definitely, avoid!