Originally Posted by sooty615
...As stated in the report, the No2 2 (co-pilot side) primary attitude indications were disabled, and if I have understood your previous post correctly, the No1 side attitude indications would have taken 30 seconds to stabilise. This being the case, the ONLY source of reliable attitude reference would be from the independent standby gyro. ...
No, only the system which is switched to ATT needs several seconds until attitude displays recover.
The right IRS is the sources for the F/O EFIS, so only his system needs to recover.