It does not sound like Bitconnect but instead, it is part of Bitconnect itself. What I am talking about is their HYIP system, they are giving you a reward based on their users' money.
you will get your reward if some people join the train, but you will not get anything if nobody is participating in their system.
they get money from your money and others, while you will get money from others and the others will not get money because nobody is participating in this kind of system again.