Media for IBSS wireless channel is different the router's but works - interesting?

IBSS wireless channel is different the router's but works - interesting?

Hi, I wanted to change my router's wireless channel number to avoid a possible signal interference resulting with strange freezes, then i changed from 11 to 6. I changed successfully.

However under advanced tab which is in my wireless adapter's driver page(device manager), IBSS channel number and WZC IBSS channel number are stayed at 11(they were default though).

However, with this settings i experienced strange freeze problem again while downloading(also i cannot reach to 192.168.1.1, but doing disable/enable or ''repair'' fixes this). Then i wanted to change channel number to 6 from driver page on my wi-fi adapter also. The computer locked and XP couldn't shut down, after restarting computer, the channel of wi-fi adapter(Broadcom BCM4318) is set to 6.

Now i am on channel 6 both for router and wi-fi adapter.

The thing i'm surprised: Before setting channels 6 for BOTH devices(router and wi-fi adapter), Although my router is broadcasting wi-fi on channel 6, WHY was i connecting and surfing although my wi-fi adapter's channel settings were set to 11 before?

I hope you understood.

Thank you...