Hi:
Sounds promising.
Something to remember, however, is that a VC who invests in a series B round has different objectives than an angel investor, a seed investor and perhaps even in investor in a series A round. If one of the B round investors in that other company has been with that company through all of those stages, they may be a candidate for you to approach, but if they're only in at the B level, you may not interest them at this time.
That said, it may not hurt to chat with a B round investor to get on their radar. They may even point you to an earlier stage investor colleague. That should be part of the prioritization exercise you take with your potential investor pool.
Before you approach any investor, however, get your story straight around differentiation and your company's unique approach to solving a marketplace problem.
If you wish to discuss, send me a PM through Clarity for 15 free minutes.
Cheers,
Kerby