have no personal experience as I've never done either but I guess the only way to find out if you can is to start increasing your training. I saw something somewhere that said you need to be able to do almost the full distance of each event in one weeks training or something like that. And build up to doing brick sessions in one day. So why don't you do a full swim one day, do the cycle the next day and the run the day after. See how you feel after the 3 days and that'll give you an idea of how far you've got to go in your training
