That's amazing - what kind of rx antenna are you using?
I'm way late, but for what's worth...
I heard them using a much maligned Mini-Whip, not even an 'original' one, but an eBay clone. Around the same time, both the BBC on 198 kHz and RUV on 189 kHz were received as well.
That said, it's not a sure thing. I have not heard them since.
This same antenna is used for 2200m and 600m WSPR, Opera, and JT9 decoding. On 600m, during the Winter, I was receiving the UK and could also monitor JT9 contacts between the US and UK.
That was back in the Winter, now, Spring 2020, it's US only.
The Mini-Whip gets a bad rap every time, but it has a lot going for it, if you accept that it's a compromise antenna.