>>717673967
>>>>>Far beyond what we can do
No, literally scientifically impossible because no material can survive hitting dust at relativistic speeds, so this would require another loophole as well.
If your premise is based off two loopholes - reaching FTL and surviving FTL blows (or avoiding them altogether) the aliens can be surprisingly primitive. It's just as likely as advanced aliens, since it requires things that are outside of what is currently possible anyway.
There might be a small inclination for them to be more advanced since that just means more time for their civilization to discover said loopholes, but it's not a requirement - they could have developed in a separate way from us and prioritized travel and diplomacy, for example.