Is this sentence all right? (No sooner had the train...)

[Nessie]

Hi,
Please have a look at this sentence:

No sooner had the train pulled away than I realised I had left my suitcase on the platform.

=> There are two past participle in the sentence. Is it all right?

Many thanks
Nessie.
_________________
... something we never have again, I know... I guess I really really know..

Sorry seems to be the hardest word...

[Yankee]

.
Yes, the sentence is fine.
Basically, both 'pulled away' and 'left' happened further in the past than 'realized'.
.