Will launchpad build my PPA projects one at a time in the order I send them?

I'm managing a large PPA with about 100 packages found in about 20 projects.

https://launchpad.net/~snapcpp/+archive/ubuntu/ppa

Whenever I want to rebuild a project, I send it and wait for it to be built, then send the next one.

There is a priority (a very specific order) for me to build each package since most packages depend on others. I have an SVG file that my build system generates showing me the priority (and changes pretty often these days):

What I'm wondering is whether I could send all the packages at once making sure that they get sent in the right order. Will launchpad build them one after the other? (i.e. if they were to decide to build them in parallel then it wouldn't work.)