Two parallel H4 Extension Petitions - after 6th year

[PIP2005]

Hi Friends,

Here is a scenario

-> My 6 years of H1B gets over on June 25th. I94 for me and my wfe ends on June 25th
-> As we were waiting on my perm & I140 my company filed for an interim extension of 2 months to reclaim days spent outside USA in the last 6 years
-> We also filed a H4 extension for my wife along with my petition for reclaiming the 2 months.
-> My H1b petition for the two months was approved & my new I94 has a date of Aug 23rd
-> But my wife's corresponding H4 petition is still pending. We received the receipt notice for it but are still waiting for biometrics appointment & final approval
-> Now my I140 is approved & my organization is going to file for a 3 year extension. Along with it we will be filing the H4 extension for my wife.

I need to know
-> By the time our new 3 year extension will be filed my wife's I94, ending on June 25th,will be expired. Will that be a problem ?
-> Will filing a new H4 extension while waiting on the decision for the interim H4 extension of 2 months be a problem ? Are parallel H4 petitions even allowed ?

Any guiance in this regard will be very helpful. I am just trying to avoid the spectre of unlawful presence for my spouse.

Thanks,,