Minecraft – Help Combining Commands on a CMD Block

I'm trying to make a PVP area on my realm away from the main area using command blocks to teleport to the designated area. However I would also like it to clear the players inventory so they don't get a head start. I've tried using Command Combiners, but none of them seem to work, they just spawn some gravel and a minecart + cmd block. The specific commands I'm trying to combine are:
/tp @p 98338 156 84729 and /clear @p.

The cmd combiners gave me this command, but it did not work:

summon falling_block ~ ~1 ~ {BlockState:{Name:stone},Time:1,Passengers:[{id:falling_block,BlockState:{Name:redstone_block},Time:1,Passengers:[{id:falling_block,BlockState:{Name:activator_rail},Time:1,Passengers:[{id:command_block_minecart,Command:"gamerule commandBlockOutput false"},{id:command_block_minecart,Command:"fill ~2 ~-3 ~-1 ~5 ~-1 ~1 light_gray_terracotta hollow"},{id:command_block_minecart,Command:"fill ~2 ~-2 ~-1 ~5 ~-2 ~1 white_stained_glass replace light_gray_terracotta"},{id:command_block_minecart,Command:"fill ~3 ~-2 ~ ~4 ~-2 ~ chain_command_block[facing=east]"},{id:command_block_minecart,Command:"setblock ~3 ~-2 ~ repeating_command_block[facing=east]"},{id:command_block_minecart,Command:"data merge block ~4 ~-2 ~ {auto:1,Command:\"/clear\"}"},{id:command_block_minecart,Command:"data merge block ~3 ~-2 ~ {auto:1,Command:\"/tp 98338 156 84729\"}"},{id:command_block_minecart,Command:"setblock ~ ~ ~1 command_block{Command:\"fill ~ ~-3 ~-1 ~ ~ ~ air\"}"},{id:command_block_minecart,Command:"setblock ~ ~-1 ~1 redstone_block"},{id:command_block_minecart,Command:"kill @e[type=command_block_minecart,distance=..1]"}]}]}]}

Is there anything wrong with this and how would I fix it?
I'm on Java Edition if that matters.

Here is an expanded version of that command:

summon falling_block ~ ~1 ~ 
{
  BlockState:
  {
    Name:stone
  },
  Time:1,
  Passengers:
  [
    {
      id:falling_block,
      BlockState:
      {
        Name:redstone_block
      },
      Time:1,
      Passengers:
      [
        {
          id:falling_block,
          BlockState:
          {
            Name:activator_rail
          },
          Time:1,
          Passengers:
          [
            {
              id:command_block_minecart,
              Command:"gamerule commandBlockOutput false"
            },
            {
              id:command_block_minecart,
              Command:"fill ~2 ~-3 ~-1 ~5 ~-1 ~1 light_gray_terracotta hollow"
            },
            {
              id:command_block_minecart,
              Command:"fill ~2 ~-2 ~-1 ~5 ~-2 ~1 white_stained_glass replace light_gray_terracotta"
            },
            {
              id:command_block_minecart,
              Command:"fill ~3 ~-2 ~ ~4 ~-2 ~ chain_command_block[facing=east]"
            },
            {
              id:command_block_minecart,
              Command:"setblock ~3 ~-2 ~ repeating_command_block[facing=east]"
            },
            {
              id:command_block_minecart,
              Command:"data merge block ~4 ~-2 ~ {auto:1,Command:\"/clear\"}"
            },
            {
              id:command_block_minecart,
              Command:"data merge block ~3 ~-2 ~ {auto:1,Command:\"/tp 98338 156 84729\"}"
            },
            {
              id:command_block_minecart,
              Command:"setblock ~ ~ ~1 command_block{Command:\"fill ~ ~-3 ~-1 ~ ~ ~ air\"}"
            },
            {
              id:command_block_minecart,
              Command:"setblock ~ ~-1 ~1 redstone_block"
            },
            {
              id:command_block_minecart,
              Command:"kill @e[type=command_block_minecart,distance=..1]"
            }
          ]
        }
      ]
    }
  ]
}