Nice observation! Are these two different spiders? The latter is definitely from the genus Arbanitis, but the former resembles that of a young Stanwellia.
The one in the open is younger in age, while the other in the burrow looks much older.
On the night, they were very conspicuous with multiple spiders poking their legs out of burrows. The disappointing thing is that I have been back to (where I think) the location is on multiple occasions but have found absolutely no trace of them! Just have to try harder to get better images. See also https://inaturalist.ala.org.au/observations/64099849 for similar conclusions