No, multi path allows routing across different paths (so, different intermediate channels), but the sender uses only one channel. As far as I'm aware there is no way to use the capacity in multiple channels to effect a payment, atomically. You would have to make multiple payments.
Discussion
No you can definitely send an MPP payment across multiple first-hop channels from the same node.
Oh, thanks for the correction!
Thank you very much nostr:nprofile1qythwue69uhnzvps9cmrst33xcezudfs8g6rsdpcqyt8wumn8ghj7ct5d3shxtnwdaehgu3wd3skueqqyqua78qfq5j7z2mr3w55lvvcd7dup7xsqcwl666wrs2le2a20epkxct2k7g nostr:nprofile1qyxhwumn8ghj7mn0wvhxcmmvqy0hwumn8ghj7mn0wd68yttjv4kxz7fwvf5hgcm0d9hzumnfde4xzqpq85h9z5yxn8uc7retm0n6gkm88358lejzparxms5kmy9epr236k2qtyz2zr nostr:nprofile1qythwumn8ghj7ct5d3shxtnwdaehgu3wd3skuep0qyt8wumn8ghj7etyv4hzumn0wd68ytnvv9hxgtcqypn4hp87wh3pd2u5036r3mj3njnhw5mkmhc9mt0m5cnch5qju8tjsy7zz08
I find Lightning super interesting but I am not fully there yet, still a lot to learn and read. Glad I'm on Nostr for this though