Munjoth, When baba attar singh mustuana shahib vale went to hazur sahib they stayed there for two years because they wanted darshan of guru sahib so badly. After 2 years of constant bhagti they finally got darshan of Guru Gobind Singh Jee. Guru Ji wasn't upset with them for longing his darshan. I don't know where you got that information from.
Also there was another occasion when Sant Jarrnail Singh Jee went to hazur sahib for Guru Ji's darshan. Gyani Thakur Singh talks about it in his katha, i'll try to find the recording