H1b transfer with H1b extension

Hello sir,

I got email with current company A to file H1b extension application before 7 month from expire of I94. As I have still 7 months for I94 to expire.

1)Now doubt is if I got offer from another company B during H1b extension process they will initiate H1b transfer , will that H1b transfer impact my H1b extension process ?

  1. if H1b transfer approved then will the h1extension continue process or it will stopped

  2. do I need to wait for H1b extension approval before I ask company B for H1b transfer?

  3. if I did not join company b after H1b transfer will it impact to H1b extension .

  4. if I join company b then they need to fill again application for H1b extension