"It is not something we work on too much in training, it is just two top players getting together and the combination works."
Carragher concedes Liverpool can only be seriously considered as a challenger for fourth place now and is aware they must continue their run of victories - which now stands at seven - if they are going to hold off Everton.
"Fourth place is obviously the aim now. We have to stay there, even if we know Everton are right in behind us," he added.
"They have had a great season and they are the main danger. They will look at how many games we have got left and believe we will drop points over the next few weeks.
"We will see after those next three games where both teams are, but I expect it to be neck and neck right to the end of the season now."