Can two types of LTR remain valid at same time

[Shrimathi]

Thanks to the contributors of this forum. I had applied ILR in person, Croydon (10 year rule). For a perticular one period of those 10 yrs stay, I had dependent LTR 1st Feb 2003 t0 04th April 2004 and WP LTR August 2003 to 2nd Feb 2004 (no issues with other LTRs in the PP). Can both of the above LTRs run at same time and both are valid, even though new WP LTR was issued inspite of having dependent LTR on the PP. I would like some one to share thier experience on similar issue. For the above reason, case worker referred the case to sr case worker and the ILR decision not made on the day. ( One of my friend came to UK in Oct 2008, who had both multiple entry visitor visa and HSMP at the same time and both were valid, does same rule holds good for the LTR as well ?)
Thanks
Shrimathi

[vinny]

Do continue in original thread.