Yes that does make it more useful thanks.
So yesterday I went walking in the bush - light not heavy density bush.
GPS hadn’t been on, last fix was the day before.
Turned GPS on at the start of the track. Getting ~6 greenish sats all the way.
Walking for 30mins with no fix until I came to a bridge and had clear sky view. Then it got a fix after ~3mins, and kept lock for the rest of the walk in the bush at ~8sats.
Showing 20sats with signals in range 25-15 (per bar graph), when under the bush cover.
Today: Turned Puremaps on while driving (i.e. phone inside car). Got a fix after 3 minutes. It was tracking OK, but I only used it for 1min after it got a fix. (i.e. by the time it had a fix, I had almost arrived), I also noticed that the position shown until it got a fix was a random position along previous travels, and definitely not the last fix position.