Trust the science, of the marketing team.

Start a subreddit called 'trustscience'.
people ask questions.
all responses, 'trust the science'.

You love to see it!! True Darwin award winners left and right.

99.74% chance he gooGled it.

Or. May be trolling.

That's not creeping doubt that's an advertisement for how "safe" it is to get both. The flu vx is relatively safe, not effective, but safe. But the honest answer is, at this time we really don't know how mRNA vx and traditional vx mix. Theoretically it's probably as safe as the two separately, but we don't know. This is the first public mRNA vaccine, the people in the earlier trials for sure were not mixing vaccines as it taints the results.

If some is good more is better

Look up antigenic interference.

The Covid-19 vax has the tentacles. The "regular flu" vax is the one with the little eyes.