Well, I've got Sky, which was pretty well essential in this part of Scotland, backed up against and rather wrapped up by a steep hill, to get any reception at all back when!
The games were/are on Sky Sports, either 3 or Mix. I don't know if you can get them on line.
edit: @dee Mae Janet 'n dweud wrthy fi that I can't help you, so I'm afraid there seems no legal method of getting a copy of the broadcast.
However, try searching for Rugby Championship on line and, thinking about it, Saturday's game at Twickenham may well turn up on UK TV eventually!!
I do think it's unfair that copyright stops a Welsh Aussie, now living in Wales from seeing her team play, especially as, if you were not having nasty chemotherapy, you might have gone along to the game. Last time I checked the seats were getting cheaper!!!