I don't think the fact you are VFR or IFR makes any difference to be honest. And neither does the flying complex machines or puddle jumpers, experenced or none experenced. It will just change how long it takes them to sort themselves out until they have enough capacity to communicate.
The simple fact is that when pilots get over loaded and/or distracted they have a nasty habit of killing themselves and and PAX with them.
The accident at Southend springs to mind with the solo student.