I worked in a mainframe team at a major financial network (very explicitly not a bank) and we were agile. The entire company was agile. The company was so agile that when we moved to our new building we did hot-desking where no team had a fixed location and every worker had a little safe where they could put their valuables and leave it in modular lockers throughout the building, so that anyone could sit anywhere there was space to sit on that day.

I mean of course it didn't exactly work like that in practice because directors had to have the corners and they wanted their teams close to them, so that, e.g. our team of 15 mainframe engineers could file in to a 5 x 5 meter cubicle and one-by-one give a report on what they had done the previous day a.k.a. The Scrum. We had a certified Scrum Master.

The one time I tried to sit in a different team's space I got yelled at by their director and had to go back. I had moved in his team's space out of protest because the only space left for me to be near my team was right in front of the gents and it smelled a bit funny. I was supposed to be sitting next to my (official) Mentor but I was studying part-time for a MSc and so was not there in the mornings and another engineer would always take my place next to the Mentor, who was the most experienced Cobol programmer in the team. He always looked at me with a wry smile whenever I came in to the office and found him sitting at ... well, it wasn't really my place so I couldn't really say anything. But then the only place for me to sit was in front of the loos. So I tried to go and sit somewhere else, farther away, in protest. And then I got yelled at.

But in principle we had hot-desking and we could sit anywhere throughout the building while communicating remotely with our colleagues.

We were very agile.

Our certified Scrum Master moved on before I did.