To think Chemo patients should not be pestered.

My late husband would probably used some very naughtical/ nautical language mixed in with some engineering anatomical (probably physically impossible) suggestions!

This is totally unacceptable - but were the staff aware of it? When I was having chemo a woman came into the ward and started speaking to patients about a support group she was running (there was a joining fee!). I was uncomfortable about it and spoke to one of the nurses who told me she had no right to be there and she was told to leave in no uncertain terms.

The staff on these wards are very busy and, quite rightly, concentrating on the patients and may not have realised what was happening

I don't think any patients, including, of course, chemo patients, should be pestered in this way.

I agree that this is unacceptable. I don't think making the hospital aware of what was going on can be classed as making a fuss. If I had observed such a thing I would think it my duty to do something to prevent further occurrences of such outrageous intrusions.

Exactly - sometimes we owe it to others to 'make a bit of a fuss' - if it is for all the right reasons.

I agree. Not a fuss. Think of others. Patients themselves often feel too vulnerable to complain. What if he was an imposter who had nicked a chaplain's badge?
NHS is more security conscious than it was, but there is still nothing to stop a confident looking person walking onto an adult ward or waiting room and engaging patients in conversation.