The traditional definition of e-learning is that it must be web enabled and asynchronous - the advantage of this being the ability to study at any pace or place, and any time.
However, virtual classrooms and other forms of communication, like chatrooms, are becoming the norm. Other forms of media, such as video conferencing have also entered the fray.
However, the clash of technologies could be bringing the definitions to a head, he says. As blended learning becomes more synchronous than asynchronous the original advantage of e-learning - the time management flexibility it gave the student - is eroded.
Mr Delves adds: 'The whole selling point of e-learning was that it gave people the freedom to do their work whenever it suited them. With chat rooms or virtual classrooms, everyone has to attend at the same time.'