Mr Harmer said CGU's decision on February 10 to appoint an assessor to Ms Doyle's case was influenced neither by media coverage nor by Premier Anna Bligh's visit to Ms Doyle on February 9.
He said the appointment of an assessor started being considered on February 2.
Mr Harmer,in his statement,denied claims that he'd accused Ms Doyle of misleading the media during a telephone conversation on February 22.
But,during cross-examination on Thursday,Mr Harmer admitted to the inquiry that he unknowingly misled Ms Doyle when he told her all her dealings with CGU had been recorded.
The inquiry heard Mr Harmer believed that all telephone calls were recorded,but technological difficulties had occurred when the CGU office was flooded in January.
CGU national claims manager James Merchant also fronted the inquiry on Thursday.
He defended CGU's claims assessment process but acknowledged there were errors in the handling of Ms Doyle's case.
"We didn't meet her expectations,and for that I'm very sorry,"he told the inquiry.
The commission will travel north on Monday to hold hearings in Bundaberg,Maryborough and Gympie.
It will deliver its final report in February.